It was the mailer that was sending out confirmations to users who signed up with email address. It failed silently on the dev machine - and I didn't notice beca

It was the mailer that was sending out confirmations to users who signed up with email address. It failed silently on the dev machine - and I didn't notice because I wasn't expecting an email - while on the server it rightfully failed and stopped everything. I'm very comforted to hear that such experience isn't limited to me. Thanks for that!