My site is hosted on Heroku and I installed the Sendgrid Add-On as it looked almost too good to be true - but so far none of the email functionality is working. I have read the
I've used the sendgrid Add-On and it really should just work. Like you said, even the docs say so:
Rails apps using ActionMailer will just work, no setup is needed after the add-on is installed.
So, this makes me think something else is going on. Have you tried using the heroku logs command to see if your application is logging any errors?