Best API to find verified emails for AI agents
Short answer
Early results only. Icypeas Email Search (Icypeas) has the highest score for finding a verified work email from a name and company domain: 100.0 out of 100 in all regions, from 3 test results in the week of 2026-11-09. It is the only tool scored so far. Arettic runs it with one key and charges only when the result passes the check. Scores firm up once each tool has 30 test results.
This week's ranking
| # | Tool | Score | Accuracy | Pass rate | Reliability | Test results |
|---|---|---|---|---|---|---|
| 1 | Icypeas Email Search · Icypeas | 100.0 | 100.0% | 100.0% | 100.0% | 3 |
How we tested
A result passes if: an email is returned and its verification status is valid (not catch-all or unknown). Catch-all counts as a fail and is refunded.
Every tool runs the same private test cases with known answers. Live calls from the last 28 days, audits and disputes count too. No provider pays to be included or sees the test set. The formula and every input are public. Scores and the formula.
Used for: Outbound prospecting, recruiting outreach, partner sourcing.
Use it from your agent
Ask Arettic which tool leads, then run it. One key covers every tool, with no account at each provider.
# MCP (Claude Code; other clients on /mcp)
claude mcp add arettic --env ARETTIC_API_KEY=sk_test_… -- npx -y @arettic/mcp
# HTTP: which tool leads, then run it
curl -X POST https://api.arettic.com/v1/recommend \
-H "Authorization: Bearer sk_test_…" -H "Content-Type: application/json" \
-d '{"task_type":"find_verified_email"}'
curl -X POST https://api.arettic.com/v1/execute \
-H "Authorization: Bearer sk_test_…" -H "Content-Type: application/json" \
-d '{"tool_id":"icypeas-verified-email","input":{"first_name":"Emily","last_name":"Carter","domain":"acme.com"}}'Questions
- What is the best email finder API for AI agents?
- Early results only. Icypeas Email Search (Icypeas) has the highest score for finding a verified work email from a name and company domain: 100.0 out of 100 in all regions, from 3 test results in the week of 2026-11-09. It is the only tool scored so far. Arettic runs it with one key and charges only when the result passes the check. Scores firm up once each tool has 30 test results.
- How is the score worked out?
- Every tool runs the same test cases each week. The score combines accuracy, pass rate, audit precision, reliability, speed and upheld disputes. The formula and every input are public on the scores page. Paying never changes a score.
- Do I need an account with each provider?
- No. One Arettic key runs every tool. Arettic holds the provider accounts and keys.
- What do I pay when a lookup fails?
- You pay only for what passes the check. It passes if: an email is returned and its verification status is valid (not catch-all or unknown). Catch-all counts as a fail and is refunded.
- Can my agent pick the tool itself?
- Yes. Call recommend with task_type find_verified_email for the ranked list, then execute the tool you want. Both work over the HTTP API and the MCP server.