Validate Emails
Coming soon. This endpoint isn’t available yet. Calls to it won’t work until it launches.
The Email Validation API checks a list of up to 1,000 email addresses against MoltSets’ validation data and returns a verdict for each.
Pass plaintext addresses in emails. Case and surrounding whitespace are ignored, and duplicates are collapsed, so you get one result per unique address.
Verdicts:
validinvalidcatch-allspamtrapabuse, withsub_statusspam_complainerwhen the address was recently seen complaining about maildo_not_mailunknownwhen MoltSets holds no signal: no spam sighting in the last 6 months and no validation in the last 60 days
Use this endpoint to:
- Clean a list before you send
- Suppress spam traps, complainers, and invalid addresses
- Check addresses that came from outside MoltSets
Cost:
Each verdict costs 1 validation token. Validation tokens are a separate balance from regular and phone tokens. See get_billing. unknown results and malformed addresses are free. No regular token is charged.
Authorizations
Pass your API key as a Bearer token. Keys follow the format ms_XXXXXXXXXXX.
Headers
Identifies the calling client. Any non-empty value is accepted — MoltSets does not validate its contents. Requests without this header are rejected with 403 Forbidden (error.code: forbidden).
Body
Plaintext email addresses to validate, 1–1,000 per call. Case and surrounding whitespace are ignored, and duplicates are collapsed.
1 - 1000 elementsResponse
Success — one verdict per unique address. The full response schema will be published at launch.
