Email verification API and email validation API for signup, import, and pre-send control

Treat verification as a workflow control. MailSlurp classifies addresses, routes uncertain records into review, and protects delivery quality across the contact lifecycle.

Verify addresses before they enter send-critical paths

Run syntax, domain, MX, disposable, role-account, and catch-all checks from signup forms, admin tools, CRM imports, and backend services before bad records create downstream cost.

Use pass, review, and reject states instead of one global rule

Protect sender reputation without over-blocking real users by matching verification decisions to each workflow's risk.