I am using rails 4.1.1 and ActionMailer::Preview. In development
environment everything is working excellent.
But in production environment the preview routes are not accessible. I
store the previews in test/mailers/previews/
Is is possible to enable them for production?
You should not really do this as the whole point of the production
environment is to be live and sending mails
The content should not be different to your test or development
environment so I am not sure what issue you think you are having
However if you want to do this, then I would suggest something like the
mailcatcher gem and temporarily reset your production SMTP settings to
use that, however as I said above there should be no need to do this
assuming you have tested your app previously
Obviously if you reset your SMTP settings to use mailcatcher then no one
will receive any live email from your app
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