notification on email delivery failure with action mailer in rails

Question

When I send an email to someone with action mailer in a rails 3 project

 mail(:to => @email, :subject=> "subject")

Is it possible for the controller to get notified if the message was delivered properly to the :to email address ,so that it will be possible to notify the sender about the email notification failure ?

Thanks.

Answer 1

You can't check to see if somebody's received an email, but you can check to see if they've opened it. Email services these days use a small 1x1px image which contains some values in the query parameters to associate it to the user.

Other than that, no.

Answer 2

The deliver operation applied to a mail object will raise an error if the mail service it uses (e.g. mailgun) refuses it. I assume it's possible to rescue that error but haven't succeeded yet.