Enrich Client Contact Data for Marketing Agencies
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.
A Cleanlist AI list called Beauty brand leads, Q4 enriched through the waterfall: 4 verified work emails and 3 phone numbers found for 4 leads, 34 credits in total. Rows with no phone number found cost nothing for that field.
10,000+ users, from founders to full sales teams
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How does Cleanlist AI enrich client contact data for marketing agencies?
Cleanlist AI gives marketing agencies a single platform to clean, verify, and enrich client contact lists across every account. Upload a client's CSV in whatever shape it arrives, and Cleanlist AI standardizes it, removes duplicates, verifies the emails, adds phone numbers and fills in firmographics. Each client gets its own workspace inside your account, with credit use tracked per client so billing is straightforward.
Why this is hard to do by hand
Agencies juggle prospect data for many clients at once, across campaigns and verticals, each with its own standards. The data usually arrives as a CSV dump from the client's CRM, and the campaign launches on a deadline. Agencies bill for results, so every hour spent fixing client contact data is either unbillable overhead or an awkward scope conversation. Few agencies have a data ops person, so the work lands on account managers.
Agencies waste 6-10 hours per client per month on manual data cleaning
6-10hrsmonthly hours wasted on manual data cleaning per agency client
A 2025 HubSpot Agency Partner survey found agencies spend 6-10 hours per client per month on data work: cleaning imported lists, fixing bounces after a campaign, deduping across campaigns and looking up missing contact fields. At 15 active clients that's 90-150 hours a month of unbillable (or awkwardly billable) work, close to one full-time person doing cleanup. Campaigns launched on dirty data also get lower open rates, more unsubscribes and clients asking whether anyone checked. Agency customers tell us their per-client data prep fell from 6-10 hours to under 30 minutes once Cleanlist AI handled cleaning, verification and enrichment.
Source: HubSpot Agency Partner Benchmark 2025; Cleanlist AI agency customer interviews
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
Create a client workspace
Give each client a workspace in your Cleanlist AI account. Their data stays separate, and you get per-client credit use and run history for reporting and billing.
- 02
Upload the client's list
Drop in the CSV as the client sent it. 'Email Address', 'email_addr' and 'Contact Email' all map to the same field without you touching it.
- 03
Clean and dedupe
Cleanlist AI finds duplicates, standardizes phone numbers, addresses and company names, and drops entries that are plainly invalid. When a client sends data from several sources, deduping across the imports keeps one prospect from getting the same campaign twice.
- 04
Verify the emails before launch
Every address is checked before the campaign goes out, which keeps bounce rates (and the client complaints that follow them) down and protects both sender reputations.
- 05
Fill in missing fields
Add job title, company, phone number, industry, company size and LinkedIn URL where they're missing. For ABM lists, the firmographics let you segment by account, which the client's raw export couldn't.
- 06
Deliver to the client
Download the data in the format the client's CRM or email platform expects (HubSpot, Salesforce, Mailchimp, Marketo). Add the quality summary (records cleaned, duplicates merged, emails verified, fields filled) to the client report.
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 |
|---|---|---|
| Multi-client data management | Separate spreadsheets per client | Isolated client workspaces with per-client credit tracking |
| Column format compatibility | Manual mapping for every client's CSV format | Columns mapped automatically, whatever they're called |
| Email verification before campaign | Send and monitor bounce rate | Every email verified before the send |
| Cleaning a 5,000-record client list | Hours of an intern's or VA's time | One automated run |
| Client-ready reporting | Manual summary in client deck | Auto-generated data quality report per job |
| Cost model for agencies | Hourly labor (unbillable overhead) | Per credit, easy to pass on as a line item |
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 I track enrichment credits per client for billing?
Yes. Each client gets its own workspace, and Cleanlist AI tracks the credits used in each one, so you can see what Client A cost against Client B. Pass it on as a line item or fold it into a retainer.
How do agencies handle data from clients with different CRM systems?
Cleanlist AI takes a CSV from any system and detects the columns wherever it came from (HubSpot, Salesforce, Pipedrive or a homegrown database). It standardizes the data, and you export it in whatever format the client's CRM or your email platform needs.
Can multiple team members at my agency use the same Cleanlist AI account?
Yes. The whole team works in one Cleanlist AI account. Account managers handle their own clients' workspaces, admins see credit use across every client, and the agency gets one bill.
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.