letter_opener is a Rails developer productivity gem that intercepts outgoing emails in Rails and opens them in the browser instead of sending them.
It makes it easy to preview email templates during development without spamming real inboxes. Setup requires adding the gem in the development group and configuring ActionMailer’s delivery method.
It's speed, visual feedback, and fewer mistakes in staging are its strengths. Alternatives include letter_opener_web for a web inbox, or mailcatcher/mailhog for SMTP-based testing.
It makes it easy to preview email templates during development without spamming real inboxes. Setup requires adding the gem in the development group and configuring ActionMailer’s delivery method.
It's speed, visual feedback, and fewer mistakes in staging are its strengths. Alternatives include letter_opener_web for a web inbox, or mailcatcher/mailhog for SMTP-based testing.