Clean Your HubSpot Contact Database
Cleanlist AI fills the missing emails and phone numbers on your CRM contacts from 25+ providers and verifies the ones already there. A lookup that finds nothing costs nothing.
A Cleanlist AI audit of HubSpot Contacts · 1,284 records. The scan flags a duplicate record, a bounced email, empty title and phone fields and two unformatted or stale titles. Agents merge the duplicate, replace the bounced address with a verified one, fill the empty fields, normalize the titles and write the result back to HubSpot.
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Sanity10,000+ users, from founders to full sales teams
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How does Cleanlist AI clean your HubSpot contact database?
Cleanlist AI's HubSpot data cleaning pipeline runs three passes on your database: first, it identifies and merges duplicate contacts using fuzzy matching on name, email, company, and phone (catching variants that HubSpot's native tool misses). The second pass verifies every email and flags the invalid, catch-all and disposable ones. The third standardizes job titles, company names, phone formats and addresses, so a list filtered on 'VP Sales' also catches 'Vice President of Sales'.
Why this is hard to do by hand
Dirty data gets into HubSpot from every direction: typos in form fills, imports with their own formatting, half-empty trade show scans and integrations that create duplicates. HubSpot's duplicate tool catches exact matches. It misses 'John Smith' at 'Acme Corp' next to 'Jon Smith' at 'Acme Corporation', and those near-duplicates pad your contact count, skew your reports and get the same prospect called twice.
Duplicate HubSpot contacts cost $2.40 per record per year in wasted marketing spend
$2.40annual cost per duplicate contact in HubSpot
HubSpot prices by marketing contact tier. Every duplicate counts toward your tier and gets your marketing emails, so you pay for it twice: once in the subscription and once in send volume. At 50,000 marketing contacts and a 10% duplicate rate, that's 5,000 duplicates and about $12,000 a year in tier fees, before the skewed engagement numbers, double-counted conversions and reps working the same prospect. The average Cleanlist AI customer's first HubSpot clean cuts the contact count by 8-12%, which often drops them a pricing tier. One customer with 62,000 contacts merged 7,400 duplicates, moved from the 100K tier to the 50K tier and saved $4,800 a year on HubSpot.
Source: HubSpot pricing tiers 2026; Cleanlist AI customer data, Q1 2026
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
Connect HubSpot and run an audit
Connect your portal over OAuth. Cleanlist AI scans the contacts and reports what it finds: how many duplicates, what share of emails are invalid, which fields are empty and where formatting is inconsistent.
- 02
Merge the duplicates
Cleanlist AI groups likely duplicates by fuzzy matching on name, email, company domain and phone. Each group comes with a suggested master record, and you approve merges in bulk or one at a time.
- 03
Verify every email
Cleanlist AI checks each address and flags the invalid, catch-all, role-based (info@) and disposable ones. If you want, contacts with permanently invalid emails can be archived automatically.
- 04
Standardize property values
Cleanlist AI applies one set of formatting rules across the database: job titles, company names ('IBM' and 'International Business Machines' become one), phone formats and addresses.
- 05
Fill the gaps
Cleaning can't add a phone number that was never there. Once the data is clean, run the waterfall across 25+ providers on the contacts still missing a phone, a title or company data.
- 06
Keep new data clean
Turn on rules that verify each new contact's email when it's created and flag likely duplicates on the way in. Schedule a re-verification every quarter for the addresses that go bad over time.
What you get.
Writes back to your CRM
Two-way sync with HubSpot and Salesforce (Pro and Enterprise plans) puts enriched fields straight onto the contact record.
25+ data providers
The waterfall asks them in sequence and stops at the first deliverable result, so a contact one provider misses can still come back from the next.
98% verified work emails
Measured on our 500-lead benchmark. Cleanlist AI flags invalid, catch-all and disposable addresses before they reach your CRM.
14-day Pro trial
250 credits and 3 seats on the Pro plan for 14 days.
Manual process vs Cleanlist AI.
| Feature | Manual | Cleanlist AI |
|---|---|---|
| Duplicate detection method | HubSpot's exact-match tool | Fuzzy matching on name, email, company, and phone |
| Duplicates caught | Only identical records | Identical records and near-matches (typos, abbreviations) |
| Email verification | Not included in HubSpot | Invalid, catch-all and disposable addresses flagged |
| Property normalization | Manual find-and-replace per field | Automated rules for titles, companies, phones, addresses |
| Cleaning 10,000 contacts | Spreadsheet work and row-by-row review | One automated pass, then a bulk review |
| Ongoing prevention | None. You clean it again by hand | New entries verified on arrival, plus scheduled re-cleaning |
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 the CRM integration work in real-time?
The HubSpot and Salesforce sync runs both ways, so enriched fields write back to the same records. You can run the contacts already in your CRM as one batch, then enrich new ones as they come in.
How many duplicate contacts does Cleanlist AI typically find in a HubSpot database?
Cleanlist AI customer data puts it at 8-12% of the contact count for the average portal, which is how much a first clean removes. Most are name variants, company abbreviations and the same person arriving through two different imports.
Will cleaning my HubSpot data affect my existing workflows and lists?
Cleanlist AI cleans the data inside HubSpot, so workflows, active lists and automations keep running on the corrected values. A merged master record keeps every activity, deal and email engagement. Test on a small list first to preview the changes.
Can I clean specific HubSpot lists instead of my entire database?
Yes. Run the clean on any active or static list, or filter by lifecycle stage, create date or lead source. It's a good way to scrub a bought list before import, or one segment before a big send.
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.
Agents that run this job
- CRM duplicate cleanupFinds duplicate accounts, contacts and leads in Salesforce or HubSpot, and merges the groups you approve.
- Enrich new CRM contactsFinds the missing email and phone number on new Salesforce or HubSpot contacts and writes them to the record.
- Deal review prepBefore Monday's pipeline review, sends each rep their open deals that have gone 14 days without activity.
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.