The Best Email Lookup Chrome Extensions for 2026
You install an email lookup Chrome extension, run it on a prospect, get a green "verified" badge - and then 20% of your list bounces on the first sequence. One Reddit user reported exactly that: "verified" emails producing bounce rates north of 20%. The word "verified" has become marketing language. What actually matters is the verification method, data freshness, and whether you're paying for emails that don't exist.
We've spent months testing these tools against real outbound campaigns, and the gap between what's promised and what's delivered is staggering.
Our Top Picks
- Prospeo - Best for email accuracy and fresh data. 98% email accuracy on a 7-day refresh cycle.
- Snov.io - Best for international leads with built-in automation. Reddit users praise it for non-US coverage.
- Hunter.io - Best for quick domain-level lookups on US companies, though the database runs thin outside the US.
Every extension in this list claims verified emails. Prospeo actually delivers 98% accuracy through 5-step verification with catch-all handling, spam-trap removal, and honeypot filtering - on a 7-day data refresh cycle. Snyk's 50 AEs cut bounce rates from 35-40% to under 5% after switching.
Install the extension used by 40,000+ reps and stop emailing ghosts.
Quick Comparison
| Tool | Free Tier | Paid From | Credit Model | Best For |
|---|---|---|---|---|
| Prospeo | 75 emails + 100 ext. credits/mo | ~$0.01/email | Credit-based | 98% accuracy, 7-day refresh |
| Hunter.io | 50 credits/mo | $34/mo (Starter, annual) | Separate search + verify credits | Domain lookups (US) |
| Snov.io | 50 searches/mo | $30/1,000 searches | Per search | International leads + drips |
| ContactOut | 5 emails/day + 5 phones/day | $49/mo annual | Per export | Email + phone combo |
| GetProspect | 50 valid emails/mo | $49/mo | Pay only for valid | Budget-conscious teams |
| Skrapp | 100 credits/mo | $30/mo | No charge for invalid | Fair credit policy |
| Kaspr | 15 B2B email credits* | $49/mo | Per credit type | EU phone numbers |
| RocketReach | 5 lookups | $39/mo | Per lookup | Thin-data enrichment |
*Kaspr's free plan shows 15 B2B email credits. "Unlimited B2B emails" is conditional on inviting 3 colleagues.
Let's be honest: every tool in this table claims "verified" emails. In our testing, the gap between claimed and actual deliverability is enormous. If you're closing deals worth $5k or more, the cost of a single bounced email to a decision-maker - burned domain reputation, lost deal - dwarfs the price difference between any two tools here. Pay for accuracy, not volume.
Best Email Finder Extensions Reviewed
Prospeo
Use this if you're running outbound at any scale and can't afford bounces tanking your domain reputation. Prospeo's database covers 300M+ professional profiles and 143M+ verified emails, all running through a 5-step verification process that includes catch-all handling, spam-trap removal, and honeypot filtering. The 7-day data refresh cycle is the real differentiator - most tools refresh every six weeks, which means you're emailing people who changed jobs a month ago.
The Chrome extension has 40,000+ users and works on company websites, professional profiles, and CRMs. It pushes directly into Salesforce, HubSpot, Smartlead, Instantly, Lemlist, Clay, or Zapier. The free tier gives you 75 verified emails and 100 extension credits per month, and paid plans run about $0.01 per email - making it one of the most cost-effective options at scale. Real-world results back this up: Snyk's 50-person AE team cut bounce rates from 35-40% to under 5% after switching, and AE-sourced pipeline jumped 180%.
Hunter.io
Hunter's extension is clean, lightweight, and does one thing well: you land on a company website, click the icon, and get a list of associated emails. It's the most popular website email finder for domain-level searches, and the interface makes bulk lookups fast. Free tier gives you 50 credits per month, and Starter runs $34/mo on annual billing.
The catch is that Hunter uses separate Search credits and Verification credits, so heavy verifiers burn through their allowance fast. Independent benchmarks from late 2025 showed Hunter hitting a 37.6% verified rate on 5,000 contacts. The consensus on r/sales echoes this - users call it a "tiny database" outside the US.
Skip this if you're prospecting internationally or need phone numbers alongside emails.
Snov.io
Snov.io bundles email finding, verification, and drip campaigns into one platform, which makes it the natural pick for small teams that don't want to stitch together three separate tools. The free tier includes 50 searches per month, and plans start at $30 per 1,000 searches. Pro S at $99/mo gets you 25,000 recipients.
Benchmark data showed a 20.1% verified rate - the lowest among tools tested on raw numbers. But Snov.io's strength is coverage breadth outside the US, not verification depth. Their automation add-on includes location-based proxies and warm-up mode for safer scaling. For teams prospecting across Europe and APAC, that breadth matters more than a single benchmark score.
ContactOut
ContactOut covers 700M+ profiles and offers unlimited emails on the $49/mo annual plan with 300 exports per month. The Email + Phone plan at $99/mo annual adds unlimited phones with 600 exports. Free tier is tight: 5 emails per day, 5 phones, 5 exports.
Skip this if you're on a budget. Per-export limits mean high-volume teams hit walls fast, and Team/API pricing requires a sales conversation.
GetProspect
GetProspect's pay-only-for-valid model means you aren't charged for emails that come back not-found. Free tier gives 50 valid emails plus 100 verifications monthly, and benchmarks showed a 61.9% verified rate - one of the stronger results across tools tested. Leftover credits roll over up to one month's allowance. Starter runs $49/mo.
For budget-conscious teams doing moderate volume, this is a solid middle ground.
Skrapp
Skrapp's fair credit policy means you don't burn credits on invalid or unknown results - only valid and catch-all emails count. Free tier is generous at 100 credits/mo, and Professional starts at $30/mo. Credits roll over even if you cancel, which is a rare perk in this space. Not the deepest database, but the economics are honest. (If you're comparing options, see our breakdown of Skrapp pricing.)
Kaspr
Here's the thing about Kaspr: the "Unlimited B2B emails" on the free plan is conditional on inviting three colleagues, and the free plan also shows just 15 B2B email credits. Starter at $49/mo includes unlimited B2B email credits, but you need a minimum 20 connections on professional networks to use the tool. Strong for EU phone numbers, less compelling for email-only use cases.
RocketReach
Five free lookups, Essentials at $39/mo, Ultimate at $249/mo. One Reddit user switched to RocketReach and reported bounce rates dropped significantly - particularly useful when working with limited input data on mid-size SaaS targets. Not the cheapest option, but worth testing if other tools aren't returning results for your niche.
Accuracy and Data Freshness
Independent benchmarks tell a sobering story. A Dropcontact test of 20,000 contacts across 15 tools - using actual live email delivery, not just SMTP pings - found top performers hitting roughly 40-55% real enrichment rates, with hard bounce rates around 1-2% among the best tools. Across the board, verified rates ranged from 17% to 77%. That's a 4.5x spread across tools that all claim to "verify" emails. (If you're evaluating vendors beyond extensions, start with our guide to data enrichment services.)
One distinction we've learned the hard way: "verified rate" in benchmarks conflates find rate with accuracy. A tool that's selective - only returning emails it's confident about - will show a lower verified rate but higher deliverability on the emails it does return. That's the difference between high accuracy on found emails and a high find rate padded with garbage. When evaluating any email lookup Chrome extension, ask what happens to the emails the tool doesn't return, not just the ones it does. (Related: how to interpret and reduce your email bounce rate.)
Look, if you're sending 500+ cold emails a week, a 5% difference in deliverability compounds into hundreds of wasted sends per month and real damage to your sender reputation. Mailgun's deliverability guide breaks down exactly how bounce rates erode domain trust over time. The math isn't complicated - it just isn't flattering for most tools. (For a deeper playbook, see our email deliverability guide and how to improve sender reputation.)
At ~$0.01 per email with 75 free verified emails and 100 extension credits monthly, Prospeo costs 90% less than ZoomInfo while delivering higher accuracy. No separate search and verification credits - just one credit, one verified email.
Stop paying for emails that bounce. Start with 75 free lookups today.
FAQ
Are email lookup Chrome extensions free?
Most offer a free tier with limited credits - typically 5 to 100 lookups per month. Prospeo's free plan is among the most generous at 75 verified emails plus 100 extension credits monthly. Paid plans across tools start around $30/mo and scale with volume. Chrome Web Store's productivity section lists dozens of options, but free doesn't mean accurate.
How accurate are email finder extensions?
Independent benchmarks show verified rates ranging from 17% to 77% across major tools. A "verified" label doesn't guarantee deliverability - look for multi-step verification and weekly data refreshes. Tools refreshing every 7 days catch job changes that monthly-refresh tools miss entirely, which is why data freshness matters as much as the verification method itself.
Can I use an email lookup extension without risking my account?
Extensions that automate actions or scrape aggressively carry higher restriction risk. Prefer tools with built-in throttling and conservative daily limits. Extensions that work on company websites and CRMs rather than automating platform-specific actions are generally safer. When in doubt, check the extension's permissions before installing - if it's requesting access to every site you visit, that's a red flag.