Mailtrap

Mailtrap is an email testing environment that captures outgoing messages from development or staging servers, preventing them from reaching real customers. Dev teams can inspect email content, subject lines, and formatting in a safe sandbox. A spam score feature checks deliverability. By analyzing the email’s HTML, Mailtrap identifies potential rendering issues. Once validated, teams switch to a production SMTP. Mailtrap suits software developers wanting to QA email workflows, avoiding accidental spam while ensuring their messages appear correctly in various clients.