Cleverly has carved out a niche in B2B lead generation by offering what most tools in the space do not: a managed outbound service where an agency team runs your LinkedIn outreach, cold email campaigns, and cold calling. With over 1,000 five-star Trustpilot reviews and case studies spanning 50+ industries, it lands on most shortlists for outsourced prospecting.
We analyzed Cleverly in detail for this review. It's the right choice if:
You want to outsource outbound prospecting to a managed service
You lack the team or expertise to run LinkedIn and email campaigns
You need an affordable entry into B2B outreach without hiring SDRs
You prefer a hands-off approach where someone else handles targeting, messaging, and follow-up
You value social proof and industry-specific case studies
However, Cleverly might not be the right choice if:
You want ownership and control of your prospect data and outreach strategy
You need verified contact data for your own sales team to act on directly
You require intent signals and buying behavior data to prioritize accounts
You want AI tools that integrate with your existing CRM and tech stack
You need security and compliance certifications
In that case, consider ZoomInfo: a B2B data and intelligence platform that takes a different approach to the same problem. Instead of outsourcing your pipeline to an agency, ZoomInfo gives your team direct access to its B2B database, an intelligence layer that identifies which accounts are ready to buy and why, and tools that let sellers and marketers act on those signals.
We've included a detailed look at ZoomInfo later in this review because it represents a different approach for teams that want to own their go-to-market data rather than delegate it. If you're ready to explore that, you can start with a free trial.
What is Cleverly?
Cleverly is a B2B lead generation agency founded in 2018 by Bruce Merrill in Los Angeles, California. Legally incorporated as Lead Generation, Inc., the company runs as a remote team of 10-49 employees serving over 10,000 clients.
The agency started as a LinkedIn outreach operation and has since expanded into cold email and cold calling. Its model is straightforward: B2B companies hand off their ideal customer profile, Cleverly's team builds prospect lists, writes messaging, runs multi-touch outreach campaigns, and delivers qualified conversations to the client's inbox.

Source: Cleverly
Cleverly's target buyer is a B2B company or sales leader who needs a predictable outbound pipeline without the overhead of building an internal SDR team.
The company is bootstrapped with estimated annual revenue of approximately $3.9 million. Clutch ranks Cleverly as the "#1 LinkedIn Marketing & Lead Generation Agency" in its category.
Cleverly Pros & Cons
Pros | Cons |
|---|---|
- Managed service requiring no internal outbound expertise | - 90-day minimum commitment for LinkedIn services |
- Affordable entry at $397/month compared to hiring SDRs | - Lead quality inconsistency reported across review platforms |
- 1,000+ Trustpilot reviews at 4.5 stars | - Results take 3-4 months to materialize |
- Multi-channel outreach (LinkedIn, email, cold calling) from one vendor | - Requires sharing LinkedIn login credentials |
- Human-written outreach copy, not AI-generated | - No free trial or free plan available |
- 100+ case studies across 50+ industries | - Strict no-refunds policy |
- Pay-per-lead option for cold email | - Salesforce and Pipedrive integrations currently non-functional |
Cleverly Review: How it Works & Key Features
LinkedIn Lead Generation: Cleverly's flagship service handles the entire LinkedIn outreach process from prospect list building to follow-up.
Cleverly follows a four-stage process for LinkedIn campaigns.

Source: Cleverly
First, the team builds prospect lists using LinkedIn Sales Navigator, applying an 80/20 targeting approach that focuses outreach on the most relevant segment of a given audience. Clients with an existing CSV of LinkedIn profiles can supply it for tighter targeting.
Second, an in-house copywriting team (not AI) writes personalized cold outreach messages for the client's industry, offer, and audience.
Third, campaigns run from the client's LinkedIn account via a structured 4-touch sequence: a connection request, then up to three follow-ups spaced days apart, stopping when a prospect replies.
Fourth, positive responses land in a real-time inbox where the client takes over the conversation.
Each client gets a dedicated account manager with monthly strategy calls and ongoing campaign optimization. Cleverly sets benchmarks: 5-25 warm conversations per 500 prospects and 5-10 booked calls per month, with variability by industry and offer quality.
Higher-tier plans add email integration on top of LinkedIn campaigns, multiple simultaneous campaigns, 1,000+ event-based messages, and a dedicated appointment setter who manages the inbox and books meetings for the client.
Cold Email Lead Generation: Enterprise-grade sending infrastructure with done-for-you campaign management and intent-based targeting.
Cleverly's cold email service runs on Azure-hosted infrastructure with USA IPs and up to 100 Outlook accounts per client, sending over 2 million emails per month across the client base. The service handles domain authentication (SPF, DKIM, DMARC), inbox warm-up, and deliverability monitoring. Cleverly claims 98% deliverability to primary inboxes.
Before full deployment, Cleverly runs A/B "micro" campaigns to test different offers and copy angles across audience personas, then scales the winning combinations. The service uses AI to generate unique first-line "ice breakers" for each prospect and integrates 10+ intent data signals (hiring activity, funding rounds, market expansion) to surface prospects showing buying behavior.
Prospect data runs through a six-provider waterfall verification process to minimize bounce rates.
Clients begin seeing replies and meetings within 4-6 weeks of launch. Two pricing models are available: a flat monthly retainer (Growth plan) or a pay-per-meeting-ready-lead model (Scale plan). Both run month-to-month with no long-term contracts.

Source: Cleverly
Cold Calling Lead Generation: A dedicated SDR placed inside your sales motion with guaranteed appointments.
Cleverly's cold calling service places a dedicated SDR who makes 300+ cold calls every day using a parallel power dialer running 3-4 lines at once. SDRs come from the top 1% of applicants and are primarily based in Egypt, where English education produces fluent speakers trained to communicate with an American accent.

Source: Cleverly
The service includes a performance guarantee: if the SDR does not book the promised 10-40 qualified appointments per month, Cleverly replaces them at no cost. SDRs go live within two weeks of kickoff, compared to the four months a typical internal hire takes to ramp. Cleverly puts the total cost at roughly half the expense of an in-house SDR team.
Cleverly uses AI research tools (Perplexity AI and OpenAI) for pre-call personalization, giving SDRs relevant prospect context before each conversation. Appointments book directly onto the client's calendar with CRM integration.
Pricing Structure: Tiered plans starting at $397/month with a 90-day minimum commitment for LinkedIn services.
Cleverly's LinkedIn pricing is organized into three tiers:
Silver ($397/month): 600 prospects messaged per month, done-for-you outreach copy, prospect list building, follow-up sequences, dedicated account manager, CRM integration, A/B testing, and profile recommendations.
Gold ($697/month): Everything in Silver, plus email integration layered onto LinkedIn campaigns, multiple simultaneous campaigns, 1,000+ event messages, and an Advanced LinkedIn Masterclass.
Platinum ($997/month): Everything in Gold, plus a dedicated appointment setter who manages the inbox and books meetings for the client.
All three tiers provide 600 prospects per month. Volume does not increase with tier; the tier determines depth of service. Team discounts are available for 3 or more users.
Cold email and cold calling pricing is not published. Both require a free consultation call for custom quotes.
The Terms of Service specify a 90-day minimum commitment for LinkedIn services. After the initial term, subscriptions renew monthly with 10-day written notice required for cancellation. Pausing for more than 30 days requires a $99/month data-retention fee to keep dashboard access. All amounts paid are non-refundable.
Where Cleverly Falls Short
Cleverly fills a real need for companies without internal outbound capability, but several limitations reflect the trade-offs of outsourcing.
No Ownership of Data or Process. When you use Cleverly, the prospect data, outreach sequences, and campaign intelligence live inside the agency's workflow, not yours.
You receive conversations in your inbox, but you don't build a database of verified contacts, accumulate intent signals, or develop institutional knowledge about your market. If you stop paying, the pipeline stops. No asset compounds over time.
Inconsistent Lead Quality. G2 reviewers (3.8 stars, 22 reviews) document a recurring pattern of irrelevant leads and classification failures. The gap between G2's 3.8 stars and Trustpilot's 4.5 stars suggests that buyers evaluating on business outcomes are less satisfied than those evaluating on operational experience. Some reviewers reported zero leads after multiple months of payment.
LinkedIn Credential Security. Cleverly's LinkedIn service requires clients to share their LinkedIn login credentials. G2 reviewers have flagged that these credentials are stored in plain text. This violates LinkedIn's Terms of Service, which prohibits third-party account access via shared credentials.
Cleverly acknowledges that its automation "may not align strictly with LinkedIn's Terms of Service" and mitigates through operational practices rather than platform-approved access methods.
Slow Ramp to Results. Cleverly states in its FAQ that "campaigns really gain momentum over the course of 3-4 months" and cannot guarantee a specific lead count. Combined with the 90-day minimum commitment and no-refunds policy, clients are committed financially before they can evaluate whether the service works for their business.
Limited Transparency and Reporting. G2 reviewers cite poor visibility into what happens inside campaigns. Clients want live data and clearer attribution on which message sequences drive replies, but current reporting provides little detail. For a service that asks clients to trust the process for three months, sparse campaign data creates friction.
Narrow CRM Integration. Cleverly natively supports HubSpot, but Salesforce and Pipedrive integrations are currently non-functional due to API endpoint changes and listed as under overhaul. For mid-market buyers on Salesforce, this is a qualifying barrier. Other platforms require Zapier-based workarounds via webhooks.
These limitations follow naturally from the agency model: when you outsource execution, you gain convenience but lose control, data ownership, and the ability to scale on your own terms. For teams ready to own their pipeline intelligence rather than rent it, a different approach exists.
A Different Approach to B2B Pipeline: ZoomInfo
Where Cleverly outsources your outbound as a managed service, ZoomInfo takes the opposite approach: it gives your team the data, intelligence, and tools to own and run your go-to-market strategy directly.
ZoomInfo is a B2B data and intelligence platform built on 500M contacts, 100M companies, 135M+ verified phone numbers, and 200M+ verified business emails. Its GTM Context Graph, an intelligence layer processing 1.5B+ data points daily, combines this data with your CRM records, conversation transcripts, and behavioral signals to show which accounts are ready to buy and why.

Your team accesses that intelligence through GTM Workspace for sellers, GTM Studio for marketers and RevOps, or APIs and MCP for custom integrations.
Comprehensive B2B Data You Own: ZoomInfo provides direct access to verified contacts, company intelligence, and buying signals your team can act on immediately.
Cleverly builds prospect lists for you; you receive conversations but not the underlying data.
ZoomInfo gives your team direct access to 500M contacts across 100M companies, filtered by 300+ attributes including industry, headcount, revenue, technology stack, and org chart relationships.
Every contact comes with verified direct-dial phone numbers and business email addresses, backed by up to 95% accuracy through a multi-source verification process that includes 300+ human researchers and automated ML scanning of 28 million site domains daily.
This data does not disappear when a contract ends or a campaign pauses. It enriches your CRM, informs territory planning, and feeds every motion from prospecting to account management.
Beyond static contact records, ZoomInfo surfaces dynamic buying signals. Buyer Intent data tracks signals from 210 million IP-to-Organization pairings, identifying companies researching topics related to your product before they fill out a form.

Guided Intent (exclusive to ZoomInfo) identifies the topics historically correlated with deal success in your market rather than requiring manual topic selection.

The data advantage has external validation: in a Fortune 500 competitive RFP analyzing 25 million contacts across vendors, the independent consultant concluded that "no other competitor came even close." ZoomInfo holds 133 No. 1 rankings on G2 and is recognized as a Leader in the Gartner Magic Quadrant for ABM Platforms and the Forrester Wave for Intent Data Providers.
"ZoomInfo gives us the information we need to execute. We don't have to spend our time digging; it's already there, so we can be three steps ahead." (Vensure Case Study)
GTM Context Graph: AI-powered intelligence that captures not just what happened in your deals, but why.
Cleverly's dashboard shows reply rates and meetings booked.
ZoomInfo's GTM Context Graph works at a different level: it combines your CRM records, conversation transcripts, email interactions, and product usage data with ZoomInfo's third-party intelligence, then extracts the connections between signals and outcomes.

The practical difference: a CRM records that a deal moved to Stage 3. Conversation intelligence (via Chorus, ZoomInfo's conversation intelligence product backed by 14 technology patents) captures what the VP said on the last call. Intent data logs a spike in research activity.

The GTM Context Graph reasons across all three to understand why the deal moved and what should happen next. That capability exists because ZoomInfo spent 20 years building data unification infrastructure and acquired conversation intelligence engines to capture context behind customer interactions.
For outbound teams, this means targeting moves beyond job titles and industries. Your team can prioritize accounts showing buying behavior, reach verified decision-makers, and personalize outreach based on what the intelligence layer reveals about each account.
Seismic attributed 39% of active pipeline to opportunities identified or influenced by ZoomInfo signals, with the sales team achieving 54% productivity gains and saving 11.5 hours per week. (Seismic Case Study)
GTM Workspace and GTM Studio: Execution tools that turn intelligence into action without outsourcing.
With Cleverly, your team waits for conversations to arrive. With ZoomInfo, your team drives the motion.
GTM Workspace is the seller's workspace. Built on Anthropic's Claude, its AI agents answer three questions for every rep: who to contact, when to engage, and what to say. The workspace provides a complete account view spanning CRM data, ZoomInfo intelligence, conversation history, and market signals.

One-click account briefs pull CRM history, company news, and stakeholder context into a summary in seconds. An Action Feed streams in-market buyers with pre-drafted actions for every signal. Sellers using GTM Workspace report 23% more pipeline and nearly 60% more meetings per week.
GTM Studio gives marketers and RevOps teams a canvas to design, enrich, and activate go-to-market plays. Teams describe audiences in natural language, launch multi-channel plays (email, calls, ads, direct mail), and measure pipeline impact, without engineering tickets or manual list building. Expansion plays that used to take 3 weeks now launch in 30 minutes.

For teams building beyond ZoomInfo's own products, APIs and MCP expose the same intelligence to any custom agent, internal tool, or partner platform.

"ZoomInfo's not just a contact data company anymore. They've built a full execution system: GTM Intelligence works the list, writes the outreach, and drives predictable growth." (Levanta Case Study)
Enterprise-Grade Security and Compliance: Certifications that meet regulated-industry requirements.
Cleverly's privacy policy was last updated in 2021 and does not reference GDPR, CCPA, or any formal compliance framework. No security certifications are publicly disclosed.
ZoomInfo maintains a full certification stack, all renewed annually: ISO 27001, ISO 27701, SOC 2 Type II, TRUSTe GDPR and CCPA validations. The company is a registered data broker in California and Vermont and maintains a dedicated Trust Center. For companies in regulated industries, this compliance infrastructure is a prerequisite.
Cleverly or ZoomInfo: Comparison Summary
Cleverly | ZoomInfo | |
|---|---|---|
Approach | Done-for-you agency; Cleverly runs campaigns on your behalf | AI-powered platform; your team owns data and execution |
Data ownership | Prospect data stays in Cleverly's workflow | Your team owns the data in your CRM and systems |
Contact database | Built per campaign by Cleverly's team | 500M contacts, 100M companies, 135M+ verified phone numbers |
Outreach channels | LinkedIn, cold email, cold calling | Email, phone, ads, chat, multi-channel orchestration |
Intent signals | 10+ intent signals used in cold email targeting | 210M IP-to-Org pairings, Guided Intent, real-time buyer signals |
AI capabilities | AI-personalized email first lines | GTM Context Graph, AI agents for research, outreach, and CRM updates |
CRM integration | HubSpot native; Salesforce and Pipedrive currently non-functional | Salesforce, HubSpot, Microsoft Dynamics, 120+ marketplace integrations |
Security certifications | None disclosed | ISO 27001, ISO 27701, SOC 2 Type II, GDPR/CCPA validated |
Free entry point | No free trial or free plan | ZoomInfo Lite (permanent free tier) + 7-day free trial |
Pricing | LinkedIn: $397-$997/month; cold email and calling by consultation | Custom-quoted; annual contracts |
Minimum commitment | 90 days (LinkedIn); month-to-month (cold email) | Annual contracts standard |
Best for | Companies without internal outbound capability who want managed service | Teams that want to own their GTM data, intelligence, and execution at scale |
Final Verdict
The choice between Cleverly and ZoomInfo is not about which generates leads better. It is about whether you want to outsource the work or own the capability.
Choose Cleverly if you need outbound pipeline but lack the team, expertise, or bandwidth to run it yourself. The agency model removes the burden of targeting, messaging, and follow-up for a fixed monthly cost.
At $397/month, it costs far less than hiring an SDR, and the Platinum tier's appointment-setting service makes the process hands-off. Cleverly works best for SMBs and midmarket companies testing outbound as a channel before committing to internal hires, particularly those with a clear ICP and the capacity to handle conversations once they arrive.
Choose ZoomInfo if you want to build a go-to-market operation that compounds over time. With broad B2B data, an intelligence layer that reveals why deals move or stall, and execution tools that put sellers and marketers in direct control of their pipeline, ZoomInfo gives your team the infrastructure to prospect, engage, and close without outsourcing the critical steps.
It is the stronger choice for companies that have (or are building) a sales team, need verified data they can act on directly, and want intent signals, conversation intelligence, and CRM integration in one system.
Get started with ZoomInfo here.
The distinction is capability versus convenience. Cleverly delivers conversations. ZoomInfo delivers the data, intelligence, and tools to generate those conversations yourself, and to understand why they convert, so every deal makes the next one smarter.
Cleverly FAQ
What does Cleverly do?
Cleverly is a done-for-you B2B lead generation agency that handles LinkedIn outreach, cold email, and cold calling for its clients. The agency builds prospect lists, writes messaging, runs multi-touch campaigns, and delivers qualified conversations to the client's inbox. Clients focus on closing deals while Cleverly manages top-of-funnel prospecting.
How much does Cleverly cost?
LinkedIn Lead Generation plans range from $397/month (Silver) to $997/month (Platinum), with a 90-day minimum commitment. All three tiers provide 600 prospects per month; the tier determines depth of service, with Platinum adding a dedicated appointment setter who books meetings for the client.
Cold email and cold calling pricing is not published and requires a consultation call. Cold email runs month-to-month with no long-term contracts.
Does Cleverly offer a free trial?
No. Cleverly does not offer a free trial or free plan for any of its services. The entry point is a free consultation call. All amounts paid are non-refundable per the Terms of Service. ZoomInfo, by contrast, offers both a permanent free tier (ZoomInfo Lite with 10 monthly export credits and access to its B2B database) and a 7-day free trial of paid features with no credit card required.
How long does it take to see results with Cleverly?
Cleverly states that campaigns gain momentum over 3-4 months and cannot guarantee a specific lead count. The agency sets benchmarks of 5-25 warm conversations per 500 prospects and 5-10 booked calls per month, with variability by industry and offer quality. Combined with the 90-day minimum commitment, clients are financially committed for a full quarter before they can assess results.
Is it safe to share LinkedIn credentials with Cleverly?
Cleverly's LinkedIn service requires clients to hand over their LinkedIn login credentials. The company acknowledges that its automation may not align strictly with LinkedIn's Terms of Service and mitigates risk through operational practices such as send-limit calibration and automated invitation withdrawal after 20 days.
However, some reviewers have flagged that credentials are stored in plain text, and the practice carries inherent account risk. Cleverly claims a zero-ban record across its client base over seven years, though this claim is unverifiable from public sources.
What CRM integrations does Cleverly support?
Cleverly natively supports HubSpot. Salesforce and Pipedrive integrations are documented but currently non-functional due to API endpoint changes and are under overhaul. For other platforms, Cleverly supports Zapier-based connections via webhooks.
ZoomInfo integrates natively with Salesforce, HubSpot, Microsoft Dynamics 365, and over 120 other tools through its App Marketplace, with API and MCP access included in all relevant plans.
What is the difference between Cleverly and ZoomInfo?
Cleverly is a managed agency that runs outbound campaigns for you. ZoomInfo is a platform that gives your team direct access to B2B data, buying signals, and execution tools.
With Cleverly, you receive conversations in your inbox but do not own the underlying data or campaign intelligence. With ZoomInfo, you own the data (500M contacts, 135M+ verified phone numbers, 200M+ verified business emails), the intelligence (GTM Context Graph processing 1.5B+ data points daily), and the tools (GTM Workspace for sellers, GTM Studio for marketers) to run your own go-to-market strategy.
Can Cleverly and ZoomInfo be used together?
In principle, yes. A company could use ZoomInfo's data and intent signals to define its ideal customer profile and target accounts, then hand that information to Cleverly for campaign execution.
However, most companies that invest in ZoomInfo find they have the data, intelligence, and execution tools to run outbound internally with more control over messaging, targeting, and data ownership than an outsourced agency provides.

