12 Best Sales Engagement Platforms for 2026

A sales engagement platform runs a sales team’s outreach. It sequences emails, calls, LinkedIn touches and SMS, schedules every follow-up and logs each activity in the CRM.

We compared 12 platforms on channels, AI, data, CRM sync and pricing. Outreach and Salesloft remain the enterprise standards for sequencing, CRM-native and outbound-focused tools suit leaner or more specialized teams, and ZoomInfo leads for teams that want verified data and engagement in one platform.

What Is a Sales Engagement Platform?

A sales engagement platform (SEP), also called sales engagement software, is where reps spend their working day. It holds the task queue, the email templates, the dialer and the activity history for every prospect, and it decides what each rep does next based on how buyers respond.

The sequence is the unit of work, and its pacing matters as much as its copy. Here’s an example of a three-week outbound sequence for a new account, the kind any multichannel SEP can run.

Spacing calls between emails keeps each touch fresh, which is the core job of sales cadence tools. The emails follow the same rules as any of the sales email sequences that convert, leading with the trigger, adding proof and ending with one clear ask.

Sales Engagement Platform vs CRM

A sales engagement platform works alongside the CRM and marketing automation, and each one does a different job. Here’s how they split the work.

The three connect through sync. Marketing automation hands qualified leads to sales, lead routing assigns them to an owner, the SEP runs the outreach, and every call and email writes back to the CRM. Clear lead qualification rules decide which of those leads enter a sequence. Sales enablement is a separate job again, covering the training and content reps use inside those sequences.

Sales Engagement Platform Features That Matter

Sending sequences is table stakes. The differences show up in the details below, and each one comes with a test to run during a demo or trial.

Sequences that react to the buyer

A good sequence engine branches on what the prospect does. Look for conditional steps based on replies, clicks and meetings, A/B testing on individual steps, schedules that respect time zones and holidays, and automatic removal the moment someone replies or books. Cloning and versioning matter more than they seem, because a growing library quickly fills with near-duplicate sequences nobody owns.

Test it: Reply to a test sequence from a seed inbox and check that the contact leaves the sequence immediately.

Dialing built for connect rates

Phone puts reps in live conversations, so the dialer decides how many of those conversations happen each day. Look for power and parallel dialing, voicemail detection and drop, local presence, number rotation and spam-flag monitoring. A dialer is only as good as the numbers it calls, so verified direct dials matter as much as dialing speed.

Test it: Run a call block on a few hundred of your own contacts and compare the connect rate with your current setup.

Deliverability you can see

Cold email at volume needs inbox warmup, mailbox rotation, sending caps and SPF, DKIM and DMARC checks. Bounce handling matters too. A platform should pause a sequence when an address bounces, because one aggressive campaign can drag a whole domain into spam folders. Running addresses through email verification tools before they enter a sequence stops bad addresses at the door.

Test it: Ask what happens to the remaining steps when an email bounces, and where you see domain health.

CRM sync you don’t have to babysit

Sync should run both ways in real time, with configurable field mapping, duplicate checks and activity logged to the right contact, account and opportunity. Several platforms on this list draw G2 complaints about sync errors that create duplicate contacts or drop activity, so this is worth testing early. Good CRM hygiene on your side makes any sync more reliable.

Test it: Log a call and an email in the trial, then check where both land in the CRM and how long they take to appear.

Signals that decide who enters a sequence

The strongest platforms enroll contacts based on what’s happening at the account. That means intent spikes, website visits, job changes, funding, new hires and CRM events, the buying signals that show an account is moving, with each one routed to the right owner. An intent data platform connected to your SEP turns those signals into enrollment rules. Website visitor tracking tools add the accounts already on your site.

Test it: Ask which signals can enroll a contact automatically and which still need a rep to act.

AI that writes from real context

AI drafts are only useful when they reflect who the buyer is, and generative AI sales tools now draft from CRM, call and account data. Greg Symons, Founder, President and COO of Asymbl, described why on ZoomInfo’s Revenue Architects podcast. His team matches messaging to each segment and persona, because a first touch to “the CEO of a 20 million dollar company or the CTO of a half a billion dollar company” can’t be the same email. “Those are very different messages.”

Test it: Have the AI draft emails for three real accounts and check every claim against your CRM and the account’s website.

Conversation intelligence and coaching

Call recording, transcription and AI summaries turn every call into coaching material. Stronger platforms score calls against your talk track, surface battlecards live and run AI roleplays for skill gaps. Conversation intelligence also flags competitor mentions, pricing objections and next steps that managers would otherwise miss.

Test it: Score last week’s calls in the trial and see whether the feedback matches what your managers would say.

Agents, MCP access and controls

Newer platforms add agents that research accounts, draft outreach and update the CRM, plus MCP or API access so tools like Claude or ChatGPT can read and act on engagement data. MCP also lets those tools pull verified B2B data from sources like the ZoomInfo MCP server without another integration.

Test it: Ask which actions an agent can take without a rep, who can change that and where you see what it cost.

Reporting tied to pipeline

Reply and connect rates show activity. Pipeline and revenue show whether the activity worked. Look for reporting that ties each sequence to meetings, opportunities and closed revenue, so managers can retire the plays that don’t convert and forecast from what’s actually working.

Test it: Ask for a report showing which sequence created the most pipeline last quarter.

How We Evaluated These Platforms

We scored each platform on six criteria, using vendor product and pricing pages, release notes and G2 reviews:

• Channels. Email, phone, LinkedIn, SMS and WhatsApp coverage inside one sequence.

• Data. Whether the platform brings its own verified contacts or depends on the records already in your CRM.

• AI and agents. What the AI drafts, recommends or runs on its own, and what data it reads.

• CRM integration. Depth of sync with Salesforce, HubSpot and other CRMs.

• Deliverability and compliance. Warmup, sending controls and domain health tools.

• Pricing model. Per seat, per contact volume or usage based, and how predictable cost is at scale.

Pros and cons for each platform reflect recurring themes in its G2 reviews, filtered for what matters in sales engagement.

Best Sales Engagement Platforms Compared

Here’s how the 12 platforms compare on fit, channels, pricing model and G2 rating.

1. ZoomInfo

G2 rating: 4.5/5 for GTM Workspace (9,187 reviews)

ZoomInfo is an all-in-one AI GTM Platform that pairs verified B2B data with AI-guided seller execution. Its data foundation covers 500M contacts and 100M companies, including 120M+ direct dials and 200M+ verified business emails, with up to 95% accuracy on first-party data. The GTM Context Graph combines that data with CRM records, calls, emails and intent signals, so outreach starts from the full account picture.

Sellers work in GTM Workspace, which delivers AI-drafted outreach, account prioritization and next-best-action recommendations in the rep’s daily workflow. Chorus adds conversation intelligence across calls, emails and meetings. RevOps and marketing teams build audiences and automated plays in GTM Studio. Any AI tool can reach the same context through GTM.AI’s API, CLI and MCP.

Inside GTM Studio, Agent Teams runs complete plays. It researches each account, finds the right buyers and enrolls them natively in Salesloft and Outreach cadences, so reps keep the sequences they already run.

Spekit’s RevOps team uses ZoomInfo scoring to show reps which accounts deserve their time, and qualification now moves 58% faster.

"ZoomInfo's data plays a big part in telling our reps where to spend their time."

Ben Perceval, RevOps Manager, Spekit

Qualified pipeline43%more likely from higher-scoring accounts

Read case study

Key features:

• Verified direct dials and business emails for prospecting and enrichment

• GTM Workspace with AI-drafted outreach, account prioritization and next-best actions

• Chorus conversation intelligence for calls, emails and meetings

• Agent Teams with native enrollment into Salesloft and Outreach cadences

• GTM.AI access through API, CLI and MCP

Pros:

• G2 reviewers rate its contact information and data accuracy as the top reasons to use it for prospecting

• Verified data and engagement in one platform, with no separate data vendor

• Agent Teams works with the Salesloft or Outreach instance a team already runs

Cons:

• Reviewers flag occasional outdated contacts and job titles, so high-value records still need a check before they enter a sequence

• New users can find the number of features overwhelming at first

• More platform than a five-person SDR team needs

Best for: Mid-market and enterprise teams that want verified data, AI guidance and engagement execution in one workflow.

Pricing: Custom. Agent Teams is part of GTM Studio with no new SKU and runs on consumption-based AI Credits, with an estimate shown before each play.

2. Outreach

G2 rating: 4.3/5 (3,670 reviews)

Outreach is an agentic AI platform for revenue teams, built on a mature sequencing engine. Its April 2026 release added Omni, a conversational agent sellers and managers use in the app, Slack or mobile, and Agent Studio, a visual canvas where RevOps teams build and schedule custom agents. Named agents include a Research Agent, a Meeting Prep Agent and a Deal Agent that suggests deal-field updates in Slack.

In June 2026, Outreach added a full MCP suite so external AI tools can work with its data. Agent Teams connects to Outreach natively, so teams can keep their sequences and let Agent Teams research accounts and enroll the right buyers.

Key features:

• Multichannel sequences across email, phone and LinkedIn

• Omni, plus Research, Meeting Prep and Deal agents

• Agent Studio for custom agents

• Deal and pipeline management with forecasting

• MCP suite for external AI tools

Pros:

• G2 reviewers say it simplifies follow-ups and contact tracking

• Sequencing and automation are its most praised capabilities

• Custom agents without engineering through Agent Studio

Cons:

• No B2B contact data of its own

• Reviewers ask for deeper email analytics and more flexible reporting

• New users face a learning curve, and some reviewers cite CRM sync failures with HubSpot

Best for: Enterprise sales organizations that want agents inside an established sales engagement platform.

Pricing: Custom. Outreach combines per-user seats with consumption-based AI credits, with no platform fees and support included. Its four Amplify packages include 10,000 AI credits (Essentials), 25,000 (Core), 50,000 (Plus) and 100,000 (Pro).

For a closer look, read our full Outreach review. Our Outplay vs Outreach comparison shows how it stacks up against a lighter option.

3. Salesloft

G2 rating: 4.5/5 (9,907 reviews)

Salesloft is a revenue orchestration platform used by more than 4,000 organizations. It merged with Clari in December 2025 and moved to a single Salesloft brand in September 2026, combining Cadence, conversation intelligence, deal management and Clari Forecast.

Cadence remains the daily driver, with multichannel steps across email, phone, LinkedIn and tasks. Rhythm ranks the next best action for every rep, and AI Email Steps draft a personalized message at each cadence step. Account agents research accounts and draft emails, and the Buyer Identification Agent finds the right leads to add to a cadence. Salesloft’s MCP server, launched in April 2026, now covers forecasting, deal inspection and call data. Agent Teams enrolls buyers in Salesloft cadences natively.

Key features:

• Cadence for multichannel sequences

• Rhythm for signal-based prioritization

• AI Email Steps, account agents and the Buyer Identification Agent

• Conversation intelligence, deal management and Clari Forecast

• MCP server for external AI tools

Pros:

• G2 reviewers rank its ease of use for contact management and outreach first

• Customizable cadences and call tracking draw strong praise

• Engagement and forecasting in one platform since the Clari merger

Cons:

• No B2B contact data of its own

• Reviewers ask for domain rotation and easier bounce handling for email

• Call issues and integration problems, particularly with HubSpot, come up often in reviews

Best for: Enterprise teams that want AI-guided cadences and forecasting in the same platform.

Pricing: Custom.

Our breakdown of Salesloft features goes deeper. Our list of Salesloft alternatives covers the rest of the field.

4. HubSpot Sales Hub

G2 rating: 4.4/5 (14,363 reviews)

HubSpot Sales Hub is the sales product on HubSpot’s customer platform, built on the same CRM as its marketing and service hubs. It combines a Prospecting Workspace, sales automation, sequences, call tracking, conversation intelligence and forecasting.

Its AI layer includes AI Guided Selling for next-best actions, deal scoring, deal progression suggestions from transcripts and emails, and the Breeze Prospecting Agent, which finds accounts, identifies buying committees and runs personalized outreach. ZoomInfo data powers HubSpot’s Breeze agents, so mutual customers get verified company and contact data inside HubSpot.

Key features:

• Prospecting Workspace with tasks, outreach activity and guided actions

• Sequences and workflow automation (Professional and Enterprise)

• Breeze Prospecting Agent

• Conversation intelligence and HubSpot Notetaker

• Forecasting and deal scoring

Pros:

• G2 reviewers praise how easy it is to use and how well it keeps outreach organized

• Lead management and pipeline visibility sit in the same CRM as sequences

• Free plan and public per-seat pricing lower the barrier to start

Cons:

• Customizable sequences need the Professional edition or higher, and reviewers say key features sit in higher tiers

• Reviewers say workflow and sequence setup can get technical

• Customization limits come up for outreach and task management

Best for: Growing teams already running HubSpot CRM.

Pricing: HubSpot’s free plan covers up to 2 users, and paid plans are billed annually per seat.

• Starter costs $7 per seat per month at a limited-time discount, for up to 10 users.

• Professional starts at $90 per seat per month and includes 10,000 HubSpot Credits a month.

• Enterprise starts at $175 per seat per month and includes 15,000 HubSpot Credits a month.

Weighing HubSpot against a dedicated cold email tool? Read our comparison of HubSpot vs Instantly.

5. Salesforce Sales Engagement

G2 rating: 4.4/5 for Agentforce Sales, formerly Sales Cloud (27,575 reviews)

Salesforce Sales Engagement, formerly High Velocity Sales, adds engagement to Sales Cloud. Sales Cadences automate a series of sales tasks along with email and call productivity features, and reps work from a Work Queue. Einstein Activity Capture logs activity automatically, and Einstein Conversation Insights adds call transcripts and coaching comments inside Salesforce.

Connected communication puts emails, calls, social touches and tasks in one to-do list inside the CRM. Email productivity tools add templates, engagement tracking and scheduling links, and a CRM extension brings Salesforce data into the inbox. Buyer Assistant handles inbound web conversations, and Prospecting Center and lead scoring help reps decide where to start. Salesforce teams that need verified contact data can add it through the Agentforce Prospecting Agent powered by ZoomInfo.

Key features:

• Sales Cadences and Work Queue

• Einstein Activity Capture, email productivity tools and a CRM extension for the inbox

• Einstein Conversation Insights with transcripts and coaching comments

• Buyer Assistant for inbound conversations

• Prospecting Center and lead scoring

Pros:

• G2 reviewers praise its lead management and single view of each customer

• Native to Salesforce, so activity and data stay in one place

• Included in Unlimited Edition and Agentforce 1 Sales Edition

Cons:

• Requires Sales Cloud and runs on the data already in your org

• Reviewers cite a steep learning curve and complex setup

• Many capabilities, Sales Engagement included, come as add-ons

Best for: Teams standardized on Salesforce that want engagement without another vendor.

Pricing: Sales Engagement costs $50 per user per month, billed annually, as an add-on to Sales Cloud. It’s included in Unlimited Edition and Agentforce 1 Sales Edition.

Choosing between Salesforce’s native option and a dedicated SEP? Our comparison of Outreach vs Salesforce covers the trade-offs.

6. Amplemarket

G2 rating: 4.6/5 (689 reviews)

Amplemarket combines a B2B database, multichannel sequences and AI in one outbound platform. Sequences run across email, phone and social steps, with conditional and A/B messaging, a parallel dialer, social automation, a unified inbox and analytics. The platform syncs both ways with Salesforce and HubSpot.

Duo is its AI layer. It tracks 24+ signal types to surface ready-to-buy leads and researches prospects in one click. Duo Copilot comes on every plan, Duo Voice adds AI voice messages on Growth and Elite, and Duo Inbox drafts replies to prospect emails on Elite. An MCP connection lets reps prospect and act from Claude or ChatGPT. Deliverability tools include email warmup and a domain health center on every plan, with spam checks and inbox placement testing on higher tiers.

Key features:

• Multichannel sequences with a parallel dialer and social automation

• Built-in B2B database with email and phone credits

• Duo Copilot, Duo Copywriter, Duo Signals, Duo Voice and Duo Inbox

• Email warmup, domain health center and inbox placement testing

• Bidirectional Salesforce and HubSpot integration

Pros:

• G2 reviewers find its outreach automation intuitive and efficient

• Lead generation and tailored messaging draw strong praise

• Data, sequences and deliverability tools in one platform

Cons:

• Reviewers want better sequence management, and some report issues with sequence cloning and automation

• Reviewers mention a learning curve and ask for more onboarding support

• CRM integration issues affect reporting for some teams

Best for: Mid-market outbound teams that want data, sequences and AI in one tool.

Pricing: Every plan runs on an annual term and includes a free trial, and extra users can be added on any plan.

• Startup costs $600 a month, with 2 users and 27,000 contacts.

• Growth is custom, with 4 users and 140,000 contacts.

• Elite is custom, with 10 users and 400,000 contacts.

For a head-to-head on data, signals and engagement, read Amplemarket vs ZoomInfo.

7. Klenty

G2 rating: 4.6/5 (391 reviews)

Klenty is a sales engagement platform built for phone-first SDR teams. Multichannel cadences unite email, calls, LinkedIn and SMS in one workflow, and AI can generate cadences and research accounts before the first touch.

Its calling stack is the standout. The AI Parallel and Power Dialer dials several lines at once or one at a time, while AI skips voicemails, takes notes and executes next steps. Connect rate infrastructure manages local presence, number rotation and number reputation, with dialers for US, global and India-based prospects. The AI Call Coaching Suite scores calls against your talk track and adds Rep360 dashboards, live battlecards and AI roleplays.

Key features:

• Multichannel cadences across email, calls, LinkedIn and SMS

• Power and Parallel Dialer with voicemail drop

• Connect rate infrastructure with local presence and number reputation

• Action AI and the AI Call Coaching Suite

• Bidirectional sync with Salesforce, HubSpot and Pipedrive

• Deliverability suite with A/B testing

Pros:

• G2 reviewers credit its automation with saving time on outreach

• Reviewers praise its support team and LinkedIn integration

• Strong dialing for phone-heavy SDR teams

Cons:

• Reviewers report integration issues and a clunky interface in places

• Reporting and analytics are basic compared to competitors, according to reviewers

• Inbound-led teams with little calling will underuse the dialer

Best for: Outbound SDR teams running high-volume call and email cadences.

Pricing: Plans are billed annually, and a 14-day free trial is available.

• Starter costs $50 a month, with unlimited users and mailboxes, 15,000 contacts and 75,000 emails a month.

• Growth costs $70 per user per month and adds calling, multichannel outreach and 2,000 data credits.

• Plus costs $99 per user per month and adds account-based selling, Action AI and call coaching.

• The Parallel & Power Dialer is a $45 per user per month add-on.

Still comparing dialers and cadence tools? See our list of Klenty alternatives.

8. Reply.io

G2 rating: 4.6/5 (1,560 reviews)

Reply.io is a multichannel outreach platform with its own B2B database. Sequences run across email, LinkedIn, calls, SMS and WhatsApp, and conditional logic changes the next step based on how a prospect responds.

Jason AI SDR is Reply.io’s autonomous agent. It finds leads, launches campaigns, personalizes messages, handles replies and books meetings. Teams can buy and set up Google or Microsoft mailboxes inside Reply.io, with DNS records configured automatically, and warm them up before sending. A meeting scheduler, a unified inbox and an MCP server for AI tools round out the platform. Our rundown of Reply.io features covers the platform in more detail.

Key features:

• Multichannel sequences across email, LinkedIn, calls, SMS and WhatsApp

• Built-in B2B database with email verification

• Jason AI SDR

• AI personalization variables and AI reply generation

• Mailbox purchase, automatic DNS setup and warmup

• MCP server for running outbound from AI tools

Pros:

• G2 reviewers praise its ease of use and quick campaign setup

• Automation across multistep sequences saves time

• Wide channel coverage in one sequence

Cons:

• Reviewers say the interface can feel overwhelming for new users

• Reporting and filtering customization is limited

• Some reviewers report sequence bugs, such as a reply not always removing a contact from the sequence

Best for: Small and mid-size outbound teams that want multichannel sequences and an AI SDR option.

Pricing: Plans are billed annually, and a 14-day free trial is available.

• Email Volume starts at $49 per user per month, with unlimited mailboxes and 1,000 active contacts.

• Multichannel starts at $89 per user per month and covers email, LinkedIn, calls, SMS and WhatsApp with unlimited active contacts.

• Jason AI SDR starts at $500 a month.

• On Email Volume, LinkedIn automation is a $69 per account per month add-on.

• On Email Volume, calls and SMS cost $29 per account per month.

Comparing Reply.io with an enterprise SEP? Read Outreach vs Reply.io.

9. lemlist

G2 rating: 4.6/5 (2,429 reviews)

lemlist is an outbound platform known for personalized cold email that now runs multichannel sequences across email, LinkedIn, in-app calling, SMS and WhatsApp. It includes a lead database, email and phone finders, and AI agents. Intent Signal Agents track high-intent events and suggest sequences and copy for each trigger, and Data Enrichment Agents pull context from LinkedIn, websites and CRM data. Reps can run lemlist from Salesforce, HubSpot or an AI assistant, and every conversation lands in one unified inbox.

Deliverability is built in. lemwarm warms inboxes on every plan, and the Deliverability Hub, inbox rotation and custom tracking domains protect sender reputation.

Key features:

• Multichannel sequences across email, LinkedIn, calls, SMS and WhatsApp

• Lead database with email and phone finders

• lemAgent, Intent Signal Agents and Data Enrichment Agents

• lemwarm and the Deliverability Hub

• HubSpot, Salesforce and Pipedrive integrations on all plans

Pros:

• G2 reviewers rank ease of use first

• Personalized outreach at scale and LinkedIn integration draw strong praise

• Deliverability tools included on every plan

Cons:

• Reviewers say credits run out quickly on high-volume campaigns

• The interface gets dense when managing many campaigns at once

• Some reviewers report emails landing in spam despite warmup

Best for: Small and mid-size teams running personalized email and LinkedIn outbound.

Pricing: Plans are billed yearly, and a 14-day free trial is available.

• The Email plan costs $55 a month, with unlimited users and 50,000 emails a month.

• Multichannel costs $87 per user per month and adds LinkedIn, SMS, calling and unlimited emails and messages.

• Enterprise is custom.

• Lead data enrichment starts at $16 a month.

• Buying intent signals start at $21 a month.

Choosing between the two cold outreach tools? Read our comparison of lemlist vs Reply.io.

10. Warmly

G2 rating: 4.5/5 (250 reviews)

Warmly is a signal-based platform that tells sales teams who is on the website and which accounts are in market. HubSpot has announced it is acquiring Warmly. It identifies visitors at the person and company level, scores intent from first-party web activity, social activity and third-party research, and maps buying committees.

It engages visitors across chat, email, LinkedIn ads and Meta ads, and teams can work in the app or through its API and MCP. Its Inbound Agent turns site traffic into meetings with an AI chatbot, live chat, meeting booking, lead routing and real-time alerts. Its TAM Agent builds audiences, tiers accounts against your ICP and runs outbound orchestration and nurture campaigns. Warmly integrates with Outreach and Salesloft, along with Salesforce, HubSpot and Slack, so its signals can reach the sequences reps already run.

Key features:

• Person- and company-level website visitor identification

• Intent scoring across first-, second- and third-party signals

• Inbound Agent with AI chat, meeting booking and lead routing

• TAM Agent for audience building, ICP tiering and outbound orchestration

• Integrations with Outreach, Salesloft, Salesforce and HubSpot

Pros:

• G2 reviewers say it helps them reach interested prospects quickly

• Real-time visitor insights support account-based plays

• Reviewers describe fast setup and early results

Cons:

• Not a sequencer on its own, so teams pair it with a sales engagement platform

• Reviewers say visitor identification isn’t always accurate

• Some reviewers report bugs with filters and integrations

Best for: Teams that want website and intent signals to trigger outreach.

Pricing: Quarterly billing is available, and annual billing saves 30%.

• AI Web-Deanonymization starts at $10,000 a year and includes visitor identification, lead routing, CRM sync and SEP integrations.

• Inbound Chat starts at $20,000 a year and adds the AI chatbot and live chat.

• AI Inbound Autopilot starts at $30,000 a year.

For other signal and visitor identification options, see our list of Warmly alternatives.

11. Nooks

G2 rating: 4.8/5 (1,715 reviews)

Nooks started as an AI parallel dialer and now positions itself as a revenue agent platform across outbound, inbound, deal management and coaching. Its AI Dialer covers multi-line and power dialing, AI answer detection, spam protection and signal-based dialing, and its Virtual Salesfloor lets managers listen in and coach live.

AI Sequencing adds multichannel steps across call, email, SMS and social, and can source prospects and add them to sequences automatically. Signals and Intelligence offers 100+ prebuilt buying signals, account research and an AI Account Assistant, and contact data enrichment works with providers including ZoomInfo. AI Coaching includes training bots and a call library.

Key features:

• AI Dialer with parallel, multi-line and power dialing

• AI Sequencing across call, email, SMS and social

• Virtual Salesfloor with live listen-in and whisper coaching

• Signals and Intelligence for account research

• AI Coaching with training bots

Pros:

• G2 reviewers rank time saved first, followed by ease of use

• Parallel dialing raises call volume for SDR teams

• Live coaching on a shared virtual floor

Cons:

• Reviewers report call quality problems, such as choppy audio and overlapping dials

• Some reviewers say notes logged in Nooks don’t carry over to the CRM

• Reviewers say wrong numbers can go undetected, which hurts connect rates

Best for: SDR teams where phone is the main channel.

Pricing: Custom quote, with packages for buyer signals, AI sequencing, parallel dialing, coaching and contact data.

12. Instantly

G2 rating: 4.8/5 (4,161 reviews)

Instantly is a cold email platform built for volume. Plans include unlimited email accounts and unlimited warmup, and higher tiers add advanced deliverability features and a dedicated sending infrastructure. A built-in lead database, verification and website visitor identification sit alongside the sending engine.

The Unibox collects replies from every inbox in one place, and the AI Reply Agent answers them. AI workflows route and tag leads and trigger the next campaign when someone visits the site, replies or books a meeting. Campaign reporting tracks opportunities, pipeline and revenue, and Instantly can pause campaigns that need work. An AI Sales Agent and AI BDR automate more of the outbound motion. Our Instantly review covers it in depth.

Key features:

• Unlimited email accounts and warmup

• Lead database, verification and website visitors

• Unibox and the AI Reply Agent

• AI workflows, AI Sales Agent and AI BDR

• Inbox placement and deliverability tools

Pros:

• G2 reviewers rate it user-friendly, with responsive support

• Cold email campaigns stay organized, with clear insights

• Built-in warmup and unlimited email accounts

Cons:

• Built around email, with no native dialer

• Reviewers say key features sit in higher-tier plans

• Some reviewers report campaign failures and analytics that lag behind sends

Best for: Teams and agencies running high-volume cold email.

Pricing: Instantly’s Outreach plans include unlimited email accounts and warmup.

• Growth costs $47 a month for 5,000 emails and 1,000 uploaded contacts.

• Hypergrowth costs $97 a month for 125,000 emails and 25,000 uploaded contacts.

• Light Speed costs $358 a month for 500,000 emails, 100,000 uploaded contacts and the SISR deliverability system.

• Enterprise is custom and adds a private deliverability network.

For a cold email alternative built around an AI SDR, read Instantly vs B2B Rocket.

From Sequences to Agents: Where Sales Engagement Is Heading

Sales engagement platforms still sit at the center of outbound. Brendan Powers, Principal GTM Operations and Engineering Manager at ZoomInfo, put it plainly on Revenue Architects: “If you have a motion where you have reps that are outbound prospecting, they’re going to call… Of course, you need sales engagement tools.”

What’s changing is who fills the sequences. Without agents, a rep reads an alert, researches the account, picks the contacts and enrolls them by hand. AI sales agents now take on that work, and the SEP becomes the execution layer underneath them.

Agent Teams follows that model. You give your agents an outcome, not a task. When a past champion changes jobs, Agent Teams resolves the person and the new account, rebuilds their role in the original deal, drafts outreach and enrolls them in the right Salesloft or Outreach cadence. When an inbound lead arrives, it researches the company, creates the CRM record, routes the lead to the right rep and posts an update in Slack. Every step is written back to Salesforce or HubSpot, and RevOps sees a credit estimate before each play runs.

Agents also raise new questions for RevOps, such as who can launch a play, what an agent is allowed to send and what each run costs. Those controls matter as much as the agents themselves, which is why governing AI agents at scale belongs in the rollout plan from day one.

How to Choose a Sales Engagement Platform

Start with the problem your current outreach has, then shortlist the platforms built to fix it.

• Reps don’t know who to contact next. Look at signal-led platforms. ZoomInfo, Amplemarket and Warmly decide who enters a sequence based on intent, job changes and website visits.

• Connect rates are low. Phone-first tools like Klenty and Nooks add parallel dialing, local presence and number reputation management.

• Email keeps landing in spam. Instantly, lemlist and Reply.io build warmup and mailbox management into the plan, and the wider outbound sales software category has more options.

• Activity and data drift away from the CRM. HubSpot Sales Hub and Salesforce Sales Engagement keep sequences inside the CRM, so there’s no sync to break.

• Hundreds of reps run hundreds of sequences. Outreach and Salesloft bring the admin controls, reporting and forecasting large teams need.

Before you sign, run a two-week pilot on your own accounts:

1. Pick a few hundred contacts from one segment and split them between your current process and the new platform.

2. Build the same sequence in both, with the same copy and timing.

3. Track connect rate, reply rate, bounce rate and meetings booked.

4. Check the CRM at the end for missing activity and duplicate records.

5. Price the full stack, including seats, data, dialer, AI credits and add-ons.

Implementation matters as much as the tool. Sales engagement platforms need configuration, integration and deliverability setup before they perform, so plan for RevOps time in the rollout. Teams weighing an agent alongside their SEP can test AI SDR tools in the same pilot.

Why Data Quality Makes or Breaks Your Sales Engagement Platform

A sales engagement platform runs exactly the data you give it, and B2B data decay means a record that was right last quarter may be wrong today. Before you connect a new SEP, audit the contacts it will work from.

ZoomInfo fills those gaps with verified direct dials and business emails. Firmographic data and technographics add the context that shapes the first message. Job change alerts flag when a contact moves. Intent data shows which accounts are researching now. Ongoing CRM data enrichment keeps every record current.

Run Sales Engagement on Verified Data

The right sales engagement platform depends on your team’s size, CRM and channels. The data underneath it decides whether any of it works. ZoomInfo gives reps verified contacts and AI-guided outreach, and Agent Teams turns buying signals into complete plays your team doesn’t have to run by hand.

See Agent Teams in action.

Frequently Asked Questions

What is a sales engagement platform?

A sales engagement platform is software that automates sales outreach across email, phone, LinkedIn and SMS. It runs sequences of touches on a schedule, adapts to how prospects respond and logs every activity in the CRM, so reps spend more time in conversations.

What is the best sales engagement platform?

It depends on team size and stack. Outreach and Salesloft lead for enterprise sequencing, HubSpot Sales Hub and Salesforce Sales Engagement suit teams that want engagement inside their CRM, and Amplemarket, Klenty, Reply.io, lemlist, Nooks and Instantly fit outbound-heavy teams. ZoomInfo fits teams that want verified data and AI-guided engagement in one platform.

What is the difference between a CRM and a sales engagement platform?

A CRM is the system of record for customer data, pipeline and deal history. A sales engagement platform is the system of action where reps run outreach. The two sync, so activity from the SEP keeps the CRM current.

What is the difference between sales engagement and marketing automation?

Marketing automation sends campaigns, nurtures and scoring at the segment level. Sales engagement runs one-to-one outreach from a named rep to a named buyer, with calls, emails and social touches in one sequence.

Does ZoomInfo have a sales engagement platform?

Yes. ZoomInfo pairs verified B2B data with AI-drafted outreach, account prioritization and next-best actions in GTM Workspace, with Chorus for conversation intelligence. Agent Teams, part of GTM Studio, runs complete plays on top.

Can AI agents enroll prospects in Outreach or Salesloft sequences?

Yes. Agent Teams connects natively to Salesloft and Outreach, so it can research an account, choose the right contacts and enroll them in an existing cadence, then write each step back to the CRM.

How much does a sales engagement platform cost?

Pricing ranges from free plans to annual contracts. HubSpot Sales Hub has a free plan, Klenty, Reply.io, lemlist and Instantly publish monthly or per-user plans, and Salesforce Sales Engagement is a per-user add-on. Outreach, Salesloft, Nooks and ZoomInfo quote custom pricing, and Amplemarket and Warmly publish starting prices on annual terms. Add data, dialer and AI credit costs before comparing.

Why do sales engagement platform rollouts fail?

Rollouts stall when setup and data aren’t ready. Sequences need clean CRM sync, deliverability configuration and verified contact data before they perform. Plan RevOps time for integration and keep contact records enriched after launch.

What features should a sales engagement platform have?

Look for sequences that react to replies and bounces, a dialer built for connect rates, visible deliverability controls, reliable two-way CRM sync, signal-based enrollment, AI that drafts from account context, call coaching and reporting tied to pipeline. Newer platforms add AI agents and MCP access for outside AI tools.