FrostyVerify

New: 500 free verifications when you sign up

Your sender reputation is one bad list away from being ruined.

Drop a CSV. Get a clean, safe list back in minutes. Bounce risk drops from ~14% to under 1%. Pay per verification, not per month.

Start free — 500 credits included See pricing

Verification complete

leads-16.csv · 1,002 rows · 23s

Submitted

1,002

emails

Safe to send

761

75.9%

Invalid

0.4%

Risky

135

catch-all + disposable

76%

safe to send

1,002 verified

Safe

76175.9%

Catch-all

13313.3%

Unknown

10210.2%

Invalid

40.4%

Disposable

20.2%

Download by category

Safe761

Catch-all133

Disposable2

Inbox full0

Spam trap0

Disabled0

Invalid4

Unknown102

Bulk in minutes

Upload up to 50,000 emails per task. Processed in parallel across multiple SMTP servers.

8-category results

Safe, role, catch-all, disposable, inbox-full, spam-trap, disabled, invalid — every email tagged so you know exactly what to send.

Filtered exports

Download safe only, risky only, or the full categorised CSV. Drop it straight into your sending tool.

Built for modern stacks

Plug verification into whatever you run

A clean REST API and an MCP server. Anything that can make an HTTP call can verify with FrostyVerify, your code, your AI agents, or your no-code flows.

REST API

Verify from your own code. Single or bulk.

MCP Server

For Claude, Cursor & AI agents.

Claude Code

Verify straight from the CLI / IDE.

Works with your stack

SmartLeadInstantlyEmail BisonApolloClayZapierMaken8n

Verify your lists before importing to any sending platform, or wire it in through the API.

Buy more, pay less per verification

Pick how many you need

Volume discount up to 37%. One credit verifies one email. Pay once.

Growth pack

Save 28%

€30.00one-time

50,000

verifications

€0.60 per 1,000 verifications

Credits never expire

50,000 emails per task, parallel processing

8-category results, filtered CSV exports

Recover the catch-alls everyone else throws away

Most verifiers dump catch-all (accept-all) domains as “risky” and you lose those contacts. Our catch-all scoring grades each one safe, risky, or invalid, so you can safely send to the deliverable ones. Billed from a separate balance.

€38.00

10,000 checks

€3.80/1k

€160.00

50,000 checks

€3.20/1k

€290.00

100,000 checks

€2.90/1k

€650.00

250,000 checks

€2.60/1k

€2,200.00

1,000,000 checks

€2.20/1k

Start scoring catch-alls

Verify right inside Claude Code

One command connects FrostyVerify to Claude Code, Cursor, or Claude Desktop. Then just say “verify leads.csv and give me the safe ones, then score the catch-alls.”

claude mcp add --env FROSTYVERIFY_API_KEY=fv_live_your_key --transport stdio frostyverify -- npx -y frostyverify-mcp

Tools: verify_email, verify_bulk, verify_catchall, get_job. Full REST API + MCP docs inside.

Need email sending accounts to go with your clean list?

Microsoft, Google, and SMTP mailboxes with domains and DNS set up for you.

Check out frostmailer.com →