Common issues and solutions for Mailtrap Email API/SMTP.
This section covers common issues you might encounter when using Mailtrap Email API/SMTP and their solutions.
Unauthorized Error (401 Code) - Issues with API credentials, tokens, or domain verification
Sending from Domain Not Allowed - Domain verification and FROM address problems
From Header Domain Mismatch - Fixing FROM header configuration issues
SSL Cipher Overlap Error (Error 1001) - Custom tracking domain SSL certificate issues
MS Office 365 Quarantine - Mailtrap emails going to Office 365 quarantine
If you don't find the solution to your problem here:
Check our FAQs for general questions
Contact support at [email protected]
Visit the API documentation for technical details
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