Email Queue Backing Up and Delays in Cursor Application

Your Cursor-built application's email delivery is severely delayed. Verification emails arrive 30 minutes late, password reset links expire before the email is delivered, and notification emails pile up in a queue that processes too slowly or gets stuck entirely.

Cursor often generates email sending code that runs synchronously in the request handler, blocking the HTTP response while waiting for SMTP. As your app grows, this approach fails because each email takes 1-3 seconds to send, overwhelming your server during traffic spikes. Alternatively, Cursor may set up a queue but configure it incorrectly, causing emails to accumulate without being processed.

Users complain about not receiving emails, repeatedly click "resend", creating even more queue pressure, and eventually abandon your app because they can't complete basic flows like email verification or password reset.