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Verify an email address
Checks whether one email address is deliverable and returns verified, invalid or pending, whether its domain is catch-all, and the credits used.
Updated Oct 11, 2026
verify-email.md
Verify an email address
Checks whether one email address is deliverable and returns verified, invalid or pending, whether its domain is catch-all, and the credits used.
Note: A check over 10 seconds returns pending: poll GET /api/v2/email-verification/{email} or pass a webhook_url. Read verification_status, not status. Needs an active paid plan and the email_verifications:create scope.
Set up
Use the first option your agent supports.
API (official)
- Base URL: https://api.instantly.ai
- Endpoint:
POST /api/v2/email-verification - Auth: send the header
Authorization: Bearer $INSTANTLY_API_KEY - Get a key: https://app.instantly.ai/app/settings/integrations
- Docs: https://developer.instantly.ai/getting-started/authorization
Before anything else, confirm access with the cheapest read-only call, like a list or a search. Never send or change anything to test access.
Rules
- Ask the user before anything that sends messages, costs money, or changes data, and say how many records it touches. One approval covers a batch the user has seen.
- Never print API keys.
Ways in
| Route | Source | Call | Required | Docs |
|---|---|---|---|---|
| Official | POST /api/v2/email-verification | API key in $INSTANTLY_API_KEY | Docs |
