Mailboxlayer
Single-call email verification API for syntax, domain, SMTP, and quality flag checks.
Built for sign-up gates that validate one email at a time against syntax, MX, and SMTP signals before saving.
Example Use Cases
These are the Mailboxlayer actions Snow can use when building apps with you. Connecting an account does not make Snow run these on its own.
Check Email Validity
Tool to validate a single email address. Use when you need to check syntax, domain, SMTP, and meta-flags.