Discussion on: Email sending is not working

There could be a handful of things contributing to this...here are some initial thoughts.

1. Mailchimp is used for marketing emails, SendGrid is used to send transactional emails (i.e. account confirmations). Do you have SendGrid configured?
2. Are you running the app in production mode?
3. You can log into the console of the app (still assuming you're running it locally) by doing rails console. Then, you can find your User record and manually confirm it so you can log in (i.e. User.last.confirm).
4. It may help to make sure you have Sidekiq running as some emails are sent asynchronously.