Verify Your Contact List Is Still Accurate
Verify Your Contact List Is Still Accurate: upload a CSV or connect your CRM, and Cleanlist AI checks each row against 25+ providers in sequence. Every new workspace opens on Pro for 14 days with 250 credits, 3 seats.
Cleanlist AI validating contact-list.csv. Each address is marked Verified, Likely valid, Risky, Invalid or Unknown. Of 10,000 rows, 8,612 Verified, 604 Likely valid, 431 Risky, 287 Invalid, 66 Unknown.
10,000+ users, from founders to full sales teams
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How does Cleanlist AI verify your contact list is still accurate?
Cleanlist AI verifies every record in your contact list through a multi-layer validation process that goes beyond basic SMTP checks. Each email is checked for deliverability, domain validity, catch-all status, disposable providers and role-based addresses, and each phone number for format, carrier type and whether it's active. The list comes back sorted by what you can use: verified email and phone (any channel), email only (email campaigns), phone only (cold calls), and nothing verified (hold back or research again). Your outreach tools get only the contacts someone can reach.
Why this is hard to do by hand
Most teams treat verification as optional until their sender reputation takes a hit. One campaign to an unverified list can push the bounce rate past the 5% line where Google and Microsoft start filtering, and that follows every later email from your domain. The older the list, the worse it gets, because people change jobs and companies shut down addresses every month.
A single campaign with a 5%+ bounce rate can damage your sender reputation for 30+ days
30+days of damaged sender reputation from one bad campaign
Google and Microsoft track sender reputation by domain. Send a campaign with a bounce rate above 5% and both cut your inbox placement, so later emails land in spam or disappear, even when every address on them is good. Rebuilding takes 30-60 days of consistently low-bounce sending. On a 5,000-contact list, 250 bounces is enough to trigger it. Verifying before each send costs 0.5 credits per email, which is small next to weeks of poor deliverability. Customers who verify with Cleanlist AI before every campaign report average bounce rates under 1.5%, down from 4-8% before, which keeps them clear of the penalty.
Source: Google Postmaster Tools documentation; Microsoft SNDS; Cleanlist AI customer data
What a lookup costs
Each lookup walks 25+ providers in cost order, and you're charged once for what comes back: 1 credit for a verified work email, 10 for a phone number, 11 for both. Validation is 0.5 and AI qualification is 5. A lookup that finds nothing is free, and the whole team pays from one wallet.
- Verified work emails25 leads searched23 × 123
- Phone numbersVerified before anyone calls18 × 10180
- Qualification agentFit score with reasons25 × 5125
- 25+Providers queried in cost order on a single lookup
- 98%Verified work emails on our 500-lead benchmark
- 85%Phone numbers found on that same benchmark
- 0Credits for a lookup that finds nothing
How it works.
- 01
Start with a CSV
Upload a CSV from any source. Each record needs an email address or a phone number. Name, company and title are kept if you include them, and aren't needed for the checks.
- 02
Six checks on every email
Each address is checked for syntax, DNS and MX records, a live SMTP mailbox, catch-all status, disposable providers and role-based prefixes (info@, sales@, support@).
- 03
Check every phone number
Numbers are checked for format, country code, carrier type (mobile, landline, VoIP) and line status (active, disconnected, ported). Fixable format errors, like a missing country code, are corrected automatically.
- 04
Score and segment
Every contact gets a risk score from 0 to 100 and a color: Green (email and phone verified), Yellow (one channel verified), Orange (catch-all or risky) or Red (invalid, don't contact).
- 05
Filter by channel
The summary shows total records, the verification rate per channel, the risk spread and the most common problems. Export by segment: email-verified contacts for campaigns, phone-verified ones for calling.
- 06
Export the verified list
Download the list with status and risk score added as columns, ready for HubSpot, Salesforce or your outreach tool. Unverified contacts come out in a separate file for another round of research.
What you get.
98% verified work emails
That's on our 500-lead benchmark. Cleanlist AI checks each email and flags catch-all and disposable addresses before you send.
25+ data providers
Cleanlist AI asks them one at a time and stops at the first deliverable result. When one provider has nothing, the next one gets its turn.
No code required
Upload a CSV or connect your CRM. If your engineers want it, the API is there from the Pro plan.
14-day Pro trial
250 credits and 3 seats on Pro for 14 days. You don't need a card or a sales call to start.
Manual process vs Cleanlist AI.
| Feature | Manual | Cleanlist AI |
|---|---|---|
| Verification layers | 1-2 checks (syntax + basic SMTP) | 6 layers including catch-all and disposable detection |
| Catch-all handling | Marked as 'valid' (false positive) | Flagged separately with deliverability risk score |
| Phone validation included | Separate tool required | Email and phone checked in the same pass |
| Risk segmentation | Binary valid/invalid | 4-tier risk scoring (Green/Yellow/Orange/Red) |
| Price per email | Varies by tool | 0.5 credits per email validated |
| Role-based email detection | Not typically detected | info@, sales@, support@ flagged automatically |
How accurate is Cleanlist AI's data?
Cleanlist AI returned 98% verified work emails and 85% phone numbers on our 500-lead benchmark, pulling from 25+ data providers. Each lookup stops at the first deliverable result, meaning a verified or likely-valid email.
What do I get when I sign up?
A 14-day Pro trial: 250 credits, 3 seats, and every Pro feature. After it, the Free plan gives you 50 credits a month. A verified work email costs 1 credit, a phone number 10, and a miss nothing.
What data providers does Cleanlist AI use?
Cleanlist AI runs a waterfall across 25+ B2B data providers. For each record it asks one, moves to the next when that one has no match, and stops at the first deliverable result.
Can I connect my CRM?
Yes. HubSpot and Salesforce sync both ways on the Pro and Enterprise plans, and Salesloft and Lemlist take a one-way push. You can also upload a CSV, or use the REST API from Pro.
How long does it take to verify my data?
It depends on the size of the file and how far down the waterfall each row has to go. Cleanlist AI runs the whole CSV as one job, so you upload once and download or sync the results when it's done.
What is the difference between email verification and email validation?
Validation checks the format: is this a properly formed address. Verification goes further and asks the mail server whether the mailbox exists and accepts mail. Cleanlist AI does both, and also flags catch-all domains, disposable providers and role-based addresses.
How does Cleanlist AI handle role-based email addresses like info@ or sales@?
Cleanlist AI flags info@, sales@, support@ and admin@ as their own group. They're valid but wrong for personal outreach, so for cold campaigns we'd leave them out and run enrichment to find the named person's work email.
Should I verify my contact list before every campaign?
Verify any list that hasn't been checked in 90 days, and re-check even recent lists before a big send like a launch or paid campaign. Verifying new contacts as they're created keeps the problem small.
Describe the job once. An agent runs it every week.
Clu turns one sentence into an agent. It searches 1B+ profiles, finds verified emails and phone numbers across 25+ providers, adds the people to your sequence and posts each run to Slack.
Weekly ICP outbound
Built by Clu from: “Every week, find 500 new people who match my ICP, get their emails and phones, and add them to Series B outbound.”
- Searched 1B+ profiles for new ICP matches500 foundPeople Search
- Ran the waterfall across 25+ providers487 emails · 412 phonesWaterfall
- Verified every email and phoneSMTP + catch-allVerification
- Added them to Series B outbound500 peopleSequences
- Posted the run to #pipelineSlackAgents
Friday 4:52 PM15 replies · 5 calls booked
Everything in the 14-day Pro trial
- Clu and agentsDescribe the job in one sentence. Clu builds the agent, runs it on a schedule or a CRM trigger and posts every run to Slack.
- People and Company SearchFind your buyers in 1B+ profiles from one sentence. Searching costs 0 credits.
- Waterfall enrichmentAsk 25+ providers in order and stop at the first verified email or phone number. 98% verified work emails and 85% phone numbers on a 500-lead benchmark.
- Email verificationRun SMTP and catch-all checks on every address before it reaches a sequence, at half a credit an email.
- ICP scoringScore every lead 0 to 100 against your ICP, with the reasons written down. The Research and Qualification skills do the digging.
- SequencesSend email from your reps' own inboxes, with call tasks. A reply stops the sequence. Sending costs 0 credits.
- CRM syncTwo-way sync with HubSpot, Salesforce and Pipedrive. Push finished lists to Outreach, Salesloft and Lemlist.
- Chrome extensionGet a verified email and phone number in one click on LinkedIn, Sales Navigator, Salesforce and HubSpot.
- MCP and APIRun the same search and waterfall from Claude or ChatGPT with 36 MCP tools, or from your own code with the REST API.
14 days of Pro, free: 250 credits, 3 seats, agents, Sequences and Clu in Slack. Then Free at 50 credits a month, or Starter at $49 and Pro at $89 a seat a month.
Hand the job to an agent.
Upload a CSV or connect HubSpot, Salesforce or Pipedrive, and run it on your own data today.
14 days of Pro, free.
Get 14 days of Pro, free.
250 credits and 3 seats. Sign up with your work email for 100 more.