ContactOut is known in B2B contact discovery, especially among recruiters and sales reps who work on LinkedIn. The platform's promise is straightforward: find verified emails and phone numbers for the people you're looking at on LinkedIn, then act on that data without switching tools. In short, ContactOut fills the gap between seeing a prospect's LinkedIn profile and reaching them.
To write this ContactOut review, we analyzed it thoroughly. It's a good fit if:
You prospect on LinkedIn and want contact data surfaced on profiles
You need personal email addresses to reach passive candidates outside corporate inboxes
You're an individual recruiter or sales rep who can work within single-user plans
You want self-serve pricing starting at $49/month without enterprise procurement
Your prospecting focuses on North American contacts
However, ContactOut might not be the best choice if:
You need intent data, buyer signals, or conversation intelligence alongside contact data
You're building a go-to-market operation across sales, marketing, and RevOps
You need multi-user team access without moving to custom enterprise pricing
You require CRM or ATS integrations on a self-serve plan
You want AI-driven account prioritization and deal intelligence, not just contact discovery
In this case, consider ZoomInfo: an AI-powered go-to-market platform that goes beyond contact data. Built on 500M contacts, 100M companies, 135M+ verified phone numbers, and 200M+ verified business email addresses, ZoomInfo combines this data with your CRM records, conversation transcripts, and behavioral signals through its GTM Context Graph, which processes 1.5B+ data points daily.
That intelligence reaches teams through three products: GTM Workspace for sellers, GTM Studio for marketers and RevOps, and APIs and MCP for custom tools or AI agents.
We've included a detailed look at ZoomInfo later in this ContactOut review, as the natural next step for teams that need more than contact data. If you're ready to explore a go-to-market intelligence platform, you can start with ZoomInfo's free trial here.
What is ContactOut?
ContactOut is a B2B contact data platform founded in December 2015 by Rob Liu.
Liu, a computer science and law student at the University of New South Wales and alumnus of 500 Startups and Startmate, noticed a simple inefficiency: recruiters couldn't easily pull direct contact information from LinkedIn profiles. He built a Chrome extension to solve it.
The company has grown from that single-purpose tool into a broader platform covering contact discovery, a Search Portal, email campaigns, data enrichment, a cloud phone dialer, and an API. ContactOut is bootstrapped with no disclosed outside funding, headquartered in Hong Kong with operations in San Francisco.
Source: ContactOut
Today, ContactOut serves two audiences: recruiters (in-house talent acquisition, agency recruiters, executive search firms) and sales users (SDRs, account executives, sales leaders). The platform claims 1.4M recruiters and sales reps from 76% of Fortune 500 companies as users, with named logos including Microsoft, Google, WarnerMedia, and Societe Generale.
ContactOut Pros & Cons
Pros | Cons |
|---|---|
Strong personal email coverage (150M personal emails) | "Unlimited" plans capped at 2,000 emails/1,000 phones per month |
Chrome Extension works across LinkedIn Standard, Recruiter, and Sales Navigator | Single-user limit on all self-serve plans |
Self-serve pricing starting at $49/month | Phone number accuracy drops outside North America |
Triple-verified data with 99% confidence claim | CRM and ATS integrations gated behind Team/API plan |
Free plan with no time limit | No intent data, buyer signals, or conversation intelligence |
Search Portal with 20+ filters for standalone prospecting | Basic email campaign features compared to dedicated tools |
ContactSheets add-on for Google Sheets enrichment | Customer support quality varies by channel |
ContactOut Review: How it Works & Key Features
Chrome Extension: ContactOut surfaces verified emails and phone numbers directly on LinkedIn profiles.
The ContactOut Chrome Extension is the platform's primary interface.
It overlays a sidebar panel on LinkedIn profiles, displaying masked contact information that users reveal with a click. Each reveal consumes one credit. The extension works on LinkedIn Standard, Recruiter Lite, Recruiter Pro, and LinkedIn Sales Navigator.
Source: ContactOut
The workflow is simple. Navigate to a LinkedIn profile, click "Show" in the sidebar, and the email and phone number appear. From there, you can save the contact to a folder, push it to a connected CRM or ATS, or add the prospect to an email campaign without leaving the panel.
For list building, the extension supports bulk reveals across LinkedIn search results in one click, skipping the need to open profiles individually. A sub-feature called "ContactOut Anywhere" extends contact discovery to company websites, showing decision-makers while you browse any company's site.
The extension also includes the AI Personalizer, which generates outreach emails from the prospect's LinkedIn profile data. It offers two modes (sales email and recruitment email) and claims to produce 4x more replies than standard outreach. A companion AI Writer on Gmail reads existing email threads and generates context-aware replies inside Gmail's compose window.
Source: ContactOut
One note: the extension does not inject automation or trigger batch network requests, so it avoids LinkedIn's abnormal activity detection. It reads the page without changing it.
Search Portal: A standalone web interface for filter-driven prospecting beyond LinkedIn.
The ContactOut Search Portal gives you access to the full database without requiring LinkedIn.
Users apply 20+ filters (job titles, companies, revenue, skills, locations, company size, departments, and technologies used) to build targeted prospect lists.
Results include verified personal emails, work emails, and direct-dial phone numbers alongside profile metadata. From filtered results, users can export to CSV, save to internal folders, push to connected CRMs, or add prospects to email campaigns in one click. Saved searches let teams re-run frequently used filter combinations.
Source: ContactOut
The portal also includes company search, letting users target firms by firmographic criteria before drilling into individual contacts. Industry coverage reaches 90% for Sales, 86% for Finance, and 85% for Technology, though healthcare coverage sits at 53%.
Email Campaigns: Built-in multi-step sequences that eliminate the handoff to a separate tool.
ContactOut's Email Campaigns feature embeds outbound email sequencing in the same platform where you discover contacts.
The pitch is consolidation: instead of exporting leads to a separate sequencer, you build and launch campaigns from within ContactOut.
Campaigns support unlimited sequential email touches with configurable business-day delays between steps. You can add recipients through manual entry, folder import, CSV upload, or one-click add from the Chrome extension. When you add prospects to a running campaign via the extension, they automatically enter the first email touch.
The email setup supports Gmail, Outlook, Office 365, and any provider via SMTP/IMAP, with multiple inboxes connectable at once. Personalization includes merge field placeholders, reusable email template libraries, and the AI Personalizer for generating per-recipient emails.
Source: ContactOut
That said, the campaign engine handles straightforward sequences only. It lacks deliverability features, A/B testing, multi-channel sequencing, and intent-based triggers found in dedicated sales engagement platforms.
Data Enrichment and API: Bulk enrichment and programmatic access for scaling beyond manual lookups.
ContactOut Data Enrichment accepts CSV uploads containing LinkedIn URLs, email addresses, or company domain names and returns enriched records with verified contact details and profile data. Available on the $99/month Email + Phone plan and above.
Source: ContactOut
For spreadsheet workflows, ContactSheets is a free Google Sheets add-on that turns formulas into live enrichment calls. Two core formulas (=co_reveal() for emails and phones, =co_enrich() for job and company data) pull from ContactOut's database in real time, letting teams enrich 1,000+ leads in seconds without leaving their spreadsheet.
The ContactOut API provides RESTful endpoints for enrichment, search, verification, and reverse email lookup. It includes a hosted MCP server for AI-native workflows, letting AI assistants query ContactOut data through natural language. API access is restricted to the Team/API plan.
Cloud Phone Dialer: A browser-based calling tool built into the platform.
The Cloud Phone Dialer lets users place VoIP calls from ContactOut after retrieving a prospect's number.
Source: ContactOut
Calls include controls for mute, hold, and in-call note-taking, with automatic recording retained for up to one year.
A companion Live Phone Search feature runs a real-time web crawl to find phone numbers not yet in the database, with 50 searches per month included for Recruiter plan users and above.
Calls are billed via pre-purchased credits: outbound calls from $0.004/min plus SIP trunking from $0.010/min, with phone numbers from $1.50/month. This is separate from the subscription cost.
Pricing Structure: Self-serve tiers with a permanent free plan and monthly or annual billing.
ContactOut uses a freemium, credit-based subscription model with four tiers:
Free Plan ($0/month, permanent):
5 email credits/day, 5 phone credits/day, 5 exports/day
Chrome Extension and Search Portal access
1 user per company
Email Plan ($49/month billed annually, $99/month on monthly billing):
Unlimited emails (subject to fair use cap)
300 exports/month
Email campaigns and list builder
1 user per company
Email + Phone Plan ($99/month billed annually, $199/month on monthly billing):
Unlimited emails and phones (subject to fair use cap)
600 exports/month
Data enrichment and AI Email Writer
1 user per company
Team/API Plan (contact sales, no published price):
Team management and reporting
API access with bulk license to 700M+ profiles
20% more data coverage
Salesforce and ATS integrations
Dedicated Account Manager
A separate $299/month unlimited sales users plan allows unlimited users from the same company.
One critical pricing detail: "unlimited" emails and phones on paid plans are governed by a fair use policy in Section 10 of the Terms of Use, which caps usage at 2,000 email credits and 1,000 phone credits per account per month. This restriction appears only in the Terms of Use, not on the pricing page. It is the most frequently cited complaint in G2 reviews.
Cancellation is self-serve from the profile page and takes effect immediately.
Where ContactOut Falls Short
ContactOut excels at its core task: finding verified contact data on LinkedIn. But several limitations show a platform built for individual contact discovery, not go-to-market execution.
"Unlimited" Isn't Unlimited. The gap between the pricing page's "unlimited emails" claim and the 2,000 email / 1,000 phone monthly cap buried in the Terms of Use is ContactOut's most documented complaint. Users who hit these caps mid-month can't buy more credits on their own; they must contact sales. For high-volume SDR teams or agencies, this ceiling arrives fast.
Single-User Plans Lock Out Teams. All three self-serve tiers enforce a 1 user per company limit. There's no way to pool credits, share saved lists, or collaborate on campaigns without upgrading to the Team/API plan at undisclosed pricing. A two-person sales team faces the same enterprise pricing conversation as a 50-person department.
No Intent Data or Buyer Signals. ContactOut tells you how to reach someone. It doesn't tell you whether they're researching solutions, evaluating competitors, or showing buying behavior. There are no intent signals, no website visitor identification, no buyer readiness scoring. For teams that prioritize outreach by timing (not just targeting), this is a real gap.
Phone Data Outside North America. G2 reviewers consistently flag phone number accuracy issues for non-US contacts. Outdated or disconnected numbers are a recurring complaint, particularly for international prospecting. ContactOut's data strength is concentrated in North America.
CRM and ATS Integrations Are Gated. Salesforce, ATS integrations, and LinkedIn Recruiter Pro compatibility are exclusive to the Team/API tier. Self-serve users on the $49 or $99 plans can push contacts through Zapier but lack native two-way sync with their sales or recruiting stack.
Source: Salesforce
Basic Email Sequencing. The built-in campaign tool handles simple multi-step sequences well enough for individual users, but it lacks A/B testing, deliverability optimization, multi-channel sequencing, and intent-based triggers. Teams that outgrow ContactOut's sequencer will need a separate sales engagement platform, creating the tool fragmentation ContactOut was designed to avoid.
Support Inconsistency. Trustpilot reviews tell a different story from ContactOut's 4.6/5 on G2. Negative reviews center on unresponsive support, billing disputes, and slow GDPR data removal requests. The product experience appears strong, but post-sale support has room to improve.
These limitations aren't failures. They're the natural result of building a contact data tool for individual simplicity rather than team-wide operations. But they create a clear inflection point for teams that need intelligence, collaboration, and execution alongside their contact data.
Top ContactOut Alternative for Full GTM Intelligence: ZoomInfo
ZoomInfo addresses ContactOut's limitations by providing not just contact data but an intelligence and execution platform for go-to-market teams.
Founded in 2007 by Henry Schuck, ZoomInfo has spent nearly two decades building the largest B2B data platform, now extended into an AI-powered go-to-market platform serving 35,000+ companies worldwide, including Adobe, Snowflake, Thomson Reuters, and Databricks.
Comprehensive B2B Data: ZoomInfo operates the largest B2B data platform, spanning contacts, companies, and buying signals.
ZoomInfo's data covers three dimensions at once: identity data (500M contacts, 135M+ verified phone numbers, 120M direct-dial phone numbers, and 200M+ verified business email addresses), company context (100M companies with firmographics, org charts, and technographics tracking 30,000+ technologies), and signals revealing when accounts are in-market.
The data flows through a multi-source verification process: automated ML scanning 28 million site domains daily, third-party partner data covering 95 million businesses, 200,000+ ZoomInfo Lite users who share data back, and an in-house Data Training Lab of 300+ human researchers. First-party data reaches up to 95% accuracy.
These aren't just ZoomInfo's own claims. In a Fortune 500 competitive RFP analyzing 25 million contacts across vendors, the independent consultant concluded that "no other competitor came even close." ZoomInfo is a Leader in the Forrester Wave for Intent Data Providers, a Leader in the Gartner Magic Quadrant for ABM Platforms for two consecutive years, and holds 133 No. 1 rankings on G2.
Vensure scaled prospecting with ZoomInfo's data, with their VP of Revenue Operations reporting: "ZoomInfo gives us the information we need to execute. It's already there, so we can be three steps ahead." (Vensure)
GTM Context Graph: ZoomInfo reasons across your CRM, conversations, and market signals to reveal why deals move, not just what happened.
Where ContactOut provides static contact records, ZoomInfo's GTM Context Graph (an intelligence layer processing 1.5B+ data points daily) unifies ZoomInfo's B2B data with a customer's CRM records, conversation transcripts from Chorus, email interactions, and behavioral signals.
The distinction matters. A CRM records that a deal moved to Stage 4. Conversation intelligence captures what the VP of Finance said on the last call. Intent data logs a spike in research activity. The GTM Context Graph reasons across all three to capture why the deal moved and what should happen next.
This powers account prioritization, AI-drafted outreach that addresses specific buyer concerns, and deal forecasting based on buying evidence rather than stage labels. ContactOut has no equivalent; it provides contact information without the contextual reasoning that turns data into decisions.
Buyer Intent tracking across 210 million IP-to-Organization pairings and 6 trillion+ keyword-to-device pairings monthly reveals which accounts are researching solutions. Guided Intent, exclusive to ZoomInfo, automatically identifies topics correlated with deal success rather than requiring manual topic selection. WebSights resolves anonymous website traffic to companies and buying team members.
Seismic attributed 39% of active pipeline to ZoomInfo-identified opportunities, with their Chief Business Officer noting: "That combination of our internal CRM data, external signals, and AI that's given all that context has helped us craft very specific account- and persona-based messages. And people have responded to them right away." (Seismic)
Universal Access: ZoomInfo delivers its intelligence through seller workspaces, marketing tools, and open APIs, so no team is locked out.
ZoomInfo provides three ways to access its data and intelligence:
GTM Workspace gives sellers a single workspace where prioritized accounts, AI-drafted outreach, and deal execution converge. Built on Anthropic's Claude, AI agents handle account research, outreach generation, CRM updates, and signal monitoring.
Source: ZoomInfo
The Action Feed surfaces in-market buyers with pre-drafted actions, while the AI Assistant generates 10-second account briefs pulling CRM history, company news, and stakeholder context.
GTM Studio gives marketers, RevOps, and go-to-market engineers an AI-powered workflow builder where audience definition, campaign orchestration, and pipeline measurement happen in natural language.
Source: ZoomInfo
Pre-built plays (inbound acceleration, champion tracking, competitive displacement) launch in one click. Waterfall enrichment evaluates 25+ alternative data sources and returns the highest-confidence result at no additional cost.
APIs and MCP expose the same intelligence to any custom agent, internal tool, or partner platform. The Enterprise API covers search, enrichment, AI intelligence (account summaries, lookalikes, contact recommendations), and audience management. The MCP server connects AI models to ZoomInfo's data as a native tool, currently supporting Claude and ChatGPT. API access is included in all relevant plans.
All three draw from the same GTM Context Graph. Nothing is degraded or siloed by the interface a team chooses.
BDO Canada activated ZoomInfo data within their internal systems, with their Senior Marketing Intelligence Analyst noting: "The plug-and-play aspect of the API means I can integrate it very easily into any process and get information at a moment's notice," achieving an 87% reduction in time spent on data dashboard updates. (BDO Canada)
Pricing and Access: ZoomInfo offers a permanent free tier, a 7-day trial, and custom-quoted plans for teams of any size.
ZoomInfo uses a custom-quoted, seat-and-credit-based model with no published prices for paid tiers, and the company is moving toward a more consumption-based pricing approach as part of its evolving PLG strategy. Costs depend on users, credit volume, features, and contract terms.
ZoomInfo Lite is a permanent free tier (not a trial) providing access to 100M+ verified profiles, 10 monthly export credits, WebSights Lite with up to 10 website visitor reveals per day, the ReachOut Chrome Extension, HubSpot integration, and built-in email sending. No credit card required.
A separate 7-day free trial gives access to core platform features including contact search, intent signals, and email outreach with usage limits.
Paid plans are organized into Sales tiers (Professional, Advanced, Enterprise) and Marketing tiers (Marketing Demand, ABM Lite, ABM Enterprise), with Chorus and Chat available as standalone products. Sales Professional includes contact and company search, mobile numbers, CRM integrations, Chrome extension, and AI-powered email generation.
Advanced adds intent signals, website visitor tracking, champion tracking, and automated workflows. Enterprise adds real-time intent, advanced automation, custom integrations, and a dedicated service manager.
ZoomInfo's compliance infrastructure matches its enterprise positioning: ISO 27001, ISO 27701, SOC 2 Type II, TRUSTe GDPR and CCPA certifications, all renewed annually.
ContactOut or ZoomInfo: Comparison Summary
ContactOut | ZoomInfo | |
|---|---|---|
Primary focus | B2B contact data discovery | AI-powered go-to-market platform |
Target audience | Individual recruiters and sales reps | Sales, marketing, and RevOps teams at scale |
Contact database | 800M people profiles | 500M contacts, 100M companies |
Personal emails | 150M | Not separately reported |
Verified phone numbers | 100M direct dials | 135M+ verified, 120M direct dials |
Verified business emails | 200M work emails | 200M+ verified business email addresses |
Intent data | Not available | Buyer Intent with 210M IP-to-Org pairings |
Conversation intelligence | Not available | Chorus (call recording, AI analysis) |
Website visitor tracking | Not available | WebSights with contact-level identification |
AI capabilities | AI Personalizer for email generation | GTM Context Graph, AI agents, account summaries, predictive scoring |
Email campaigns | Basic multi-step sequences | Workflows, multi-channel orchestration via GTM Studio |
Chrome Extension | LinkedIn-native | ReachOut extension |
CRM integrations | Salesforce, HubSpot (Team plan only) | Salesforce, HubSpot, Dynamics 365, 120+ marketplace integrations |
Team collaboration | 1 user per company on self-serve plans | Multi-seat plans with role-based access |
Pricing transparency | Published self-serve pricing from $49/month | Consumption-based pricing model |
Free tier | 5 emails/day, 5 phones/day (permanent) | ZoomInfo Lite: 10 exports/month (permanent) |
Compliance | CCPA, GDPR | ISO 27001, ISO 27701, SOC 2 Type II, TRUSTe GDPR/CCPA |
Analyst recognition | 4.6/5 on G2 | Gartner Leader (ABM), Forrester Leader (Intent), 133 G2 No. 1 rankings |
Final Verdict
The choice between ContactOut and ZoomInfo comes down to whether you need contact data or a go-to-market intelligence platform.
Choose ContactOut if you're an individual recruiter or sales rep who prospects on LinkedIn and needs a fast, affordable way to find verified emails and phone numbers. The Chrome Extension workflow is efficient for one-at-a-time prospecting, personal email coverage is a real advantage for reaching passive candidates, and self-serve pricing at $49/month makes it accessible without procurement.
If your job is finding contact information and reaching out, and you don't need intent signals, team collaboration, or CRM integration, ContactOut does that job well.
Choose ZoomInfo if your team needs more than contact data to drive pipeline. ZoomInfo is the right platform when you need to know not just how to reach someone but whether they're buying, what signals suggest deal momentum, and which accounts to prioritize today.
The GTM Context Graph reasons across your CRM, conversations, and market signals. GTM Workspace serves sellers. GTM Studio serves marketers and RevOps. Together, they turn data into coordinated action across your go-to-market operation. For teams that have outgrown individual contact lookups and need intelligence at scale, ZoomInfo is built for that.
Get started with ZoomInfo here.
ContactOut built a focused tool for finding contact information quickly and affordably. ZoomInfo built the intelligence infrastructure for running a go-to-market engine. Your choice depends on which problem you're solving.
ContactOut FAQ
Is there a free version of ContactOut?
Yes. ContactOut offers a permanent free plan with 5 email credits per day, 5 phone credits per day, and 5 exports per day. No credit card required. The free plan includes access to the Chrome Extension and Search Portal. ZoomInfo also offers a permanent free tier called ZoomInfo Lite, which provides access to 100M+ verified profiles, 10 monthly export credits, a Chrome extension, and HubSpot integration.
What does "unlimited" mean on ContactOut's paid plans?
ContactOut's paid plans advertise "unlimited emails" and "unlimited phones," but a fair use policy in the Terms of Use caps usage at 2,000 email credits and 1,000 phone credits per account per month. This restriction does not appear on the pricing page. Users who exceed these caps must contact sales for additional credits.
Does ContactOut have intent data or buyer signals?
No. ContactOut provides emails, phone numbers, and profile information. It does not offer buyer intent signals, website visitor identification, or account prioritization based on buying behavior. ZoomInfo includes Buyer Intent tracking across 210 million IP-to-Organization pairings, website visitor identification through WebSights, and AI-driven account scoring through its GTM Context Graph.
Can multiple team members share a ContactOut account?
Not on self-serve plans. All three individual tiers enforce a one-user-per-company limit. Teams that need shared access, pooled credits, or collaboration features must upgrade to the Team/API plan, which requires contacting sales with no published pricing. A separate unlimited sales users plan at $299/month allows unlimited users from the same company.
How accurate is ContactOut's phone data?
ContactOut claims triple-verified data at 99% confidence. However, G2 reviewers frequently report that phone number accuracy drops for contacts outside North America, with outdated or disconnected numbers a recurring issue. The platform's data strength is concentrated in North American contacts, particularly in sales, finance, and technology verticals.
Does ContactOut integrate with Salesforce?
Salesforce integration exists but is gated behind the Team/API plan, which requires custom pricing. Self-serve users on the Email or Email + Phone plans cannot access native Salesforce or ATS integrations. They can connect through Zapier, but two-way sync and full CRM integration require the enterprise tier.
ZoomInfo includes Salesforce, HubSpot, and Microsoft Dynamics integrations across its plan tiers, with 120+ additional integrations in its App Marketplace.
What types of emails does ContactOut find?
ContactOut's distinguishing data asset is personal email addresses. The platform claims 150M personal emails (addresses like Gmail accounts), 200M work emails, and coverage across 800M total people profiles. Personal email access is particularly valuable for recruiters reaching passive candidates whose corporate inboxes may be inaccessible.
ZoomInfo focuses on verified business email addresses (200M+) and direct-dial phone numbers (135M+ verified), optimized for B2B sales and marketing outreach.
Does ContactOut offer an API?
Yes. The ContactOut API provides RESTful endpoints for enrichment, search, verification, and reverse email lookup, plus a hosted MCP server for AI-native workflows. However, API access is restricted to the Team/API plan with no published pricing. ZoomInfo includes API access in all relevant plans and offers both a structured Enterprise API and an MCP server compatible with Claude and ChatGPT.
