For Clay agencies

Verify every email in your Clay tables for $0.00099 or less.

Clay agencies and GTM engineers run waterfalls for many clients. Add Verifly as an HTTP API column and check every found email before it is pushed to a sequencer or CRM. One shared pay-as-you-go credit pool, an API key per client, no seats. 100,000 checks for $99, 500,000 for $349. Credits never expire.

Get 100 free credits Read API docs

No card needed · 500 free credits with a work email · credits never expire

Clay HTTP API column (GET)API

https://verifly.email/api/v1/verify?email={{Work Email}}

Header: Authorization: Bearer vf_your_api_key
Map: result, catch_all, disposable, role

Real-time SMTP mailbox checks

Single, batch, and async bulk verification

Disposable, role account, and catch-all detection

Pay-as-you-go credits with no subscription lock-in

Search fit

Built for Clay email verification for agencies

Use Verifly when you need a simple API, predictable pricing, and clean JSON results before emails hit your product, CRM, or campaign tool.

Final step of an email waterfall: verify before pushing to Smartlead, Instantly or HubSpot

Per-client API keys so you can split cost by client

Re-verify old tables before a new campaign

Flag catch-all results for a small test send instead of dropping them

Same key works in n8n, Make and the MCP endpoint for AI agents

Why agencies verify outside Clay credits

Waterfalls find emails from several providers, and accuracy varies. A dedicated verification step at the end protects client sending domains. Doing it with your own Verifly key keeps that cost predictable and separate from Clay credits.

Set up in Clay

Takes about five minutes per workspace.

Create a Verifly account (500 free checks with a work email, no card).
Create an API key per client.
In Clay, add an HTTP API column: GET https://verifly.email/api/v1/verify?email={{Work Email}} with the Bearer header.
Map the result field, then filter so only deliverable (and optionally catch-all) rows push to the sequencer.

FAQ

Frequently asked questions

Does it work with Clay waterfalls?

Yes. Put the Verifly HTTP column after your finders and run it only on rows with an email.

Can I split cost by client?

Yes. Make one API key per client; all draw from one credit pool.

Is it a subscription?

No. One-time packs, credits never expire.

Trial credits for a pilot?

Email hello@veriflyemail.com with your account email.

Ready to wire this?

Start free with 100 credits, mint a vf_ API key, and paste the recipe above. Buy a pack only when you need more, credits never expire.

Start free · 100 credits View pricing API docs