Verify Your Recruiting Contact Lists
Upload the list and Cleanlist AI verifies the contacts you have, then fills missing work emails and phone numbers from 25+ providers. Coverage varies by industry, and you pay only for the rows that come back.
Cleanlist AI validating contacts.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 recruiting contact lists?
Cleanlist AI verifies and refreshes recruiting contact lists by cross-referencing each candidate's email and phone against 25+ data providers in real-time. It flags dead work emails, updates the current employer and title, and adds phone numbers (a personal cell or the new work line). If you email passive candidates, verifying first keeps bounces down and your domain out of spam folders. The file goes back to your ATS or CRM in the format it imports.
Why this is hard to do by hand
Recruiting and staffing firms hold tens of thousands of candidate records, and the details change constantly. Candidates move jobs often, and each move kills a work email and an office number. LinkedIn stays current, but it won't give you a verified email or a phone number. Meanwhile Greenhouse, Lever and Bullhorn fill up with years of stale candidates who clutter search results and eat recruiters' time.
ATS databases have 42% stale data after just 12 months without verification
42%of ATS candidate records stale after 12 months
Bullhorn's 2025 Staffing Industry Benchmark found that in the average ATS, 42% of candidate records have at least one core field (email, phone, employer or title) out of date within 12 months of entry. The rate is higher for tech candidates (52%) and early-career professionals (58%), who move more often. In a 100,000-candidate database, that's 42,000 records producing bounced outreach, wasted sourcing time and missed placements. Staffing customers tell us a first Cleanlist AI run typically flags 15-25% of emails as undeliverable and updates the employer on 20-30% of records. The most common case is a candidate sourced at Company A who now works at Company B, with the old work email dead. A verified personal email or cell number for those people often reopens a placement that looked lost.
Source: Bullhorn Staffing Benchmark 2025; Cleanlist AI staffing 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
Export candidates from your ATS
Export a CSV from Greenhouse, Lever, Bullhorn, JobAdder or any other ATS with name, email, phone, company, title and candidate status. Filter by last-contacted date so the stalest records go first.
- 02
Upload the file
Upload the CSV. Cleanlist AI maps the recruiting fields and starts checking three things: whether each email delivers, whether each phone number is valid, and whether the employer is still current.
- 03
Verify each email
SMTP validation, an MX lookup, catch-all detection and disposable filtering run on every address. A work email at a former employer is flagged invalid, with the reason noted.
- 04
Update employer and title
Cleanlist AI updates the employer, job title and company details, so your ATS shows where each candidate works today.
- 05
Add personal contact details
When the work email is dead, Cleanlist AI adds another way in: a verified personal email, a cell number and the current LinkedIn URL. That's how a recruiter reaches someone who has moved on.
- 06
Re-import to your ATS
Download the file in your ATS's import format. Candidate IDs and record structure stay intact, so updates land on the existing records and no duplicates get created.
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 |
|---|---|---|
| Candidate email freshness | Unknown until bounce | Verification catches stale work emails before you send |
| Current employer detection | Manual LinkedIn check per candidate | Employer and title updated on each run |
| Personal email fallback | Not available | Verified personal email appended when work email fails |
| Cell phone number append | Rarely available in ATS data | Mobile numbers from 25+ providers (85% phone numbers on our 500-lead benchmark) |
| Verifying 5,000 candidates | Not realistic by hand | A single upload |
| ATS re-import compatibility | N/A | CSV that keeps your ATS columns and candidate IDs |
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.
Does Cleanlist AI have good coverage for my industry?
Coverage varies by industry, so Cleanlist AI asks 25+ providers in sequence until one returns a deliverable result. On our 500-lead benchmark, Cleanlist AI returned 98% verified work emails and 85% phone numbers.
Can Cleanlist AI detect when a candidate has changed jobs?
Yes, each time you run the list. Cleanlist AI checks current employment across several providers. If the work email is at Company A and the candidate now works at Company B, it flags the mismatch, updates employer and title, and can add the new work email.
Does Cleanlist AI integrate directly with ATS platforms like Greenhouse or Lever?
Not directly. Cleanlist AI works with any ATS through CSV: export from Greenhouse, Lever, Bullhorn or another system, enrich in Cleanlist AI and re-import. The file keeps your ATS field structure and candidate IDs, so there's nothing to remap.
Is it compliant to verify candidate email addresses?
Verification checks whether an address can receive mail. It sends nothing to the candidate. For GDPR compliance, ensure you have a lawful basis for processing candidate data (typically legitimate interest for recruiting).
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.