Hi guys

It seems letter_opener_web won't be much of use on heroku. I would assume that most people use workers to send their emails.

As far as i understand this workers and all dynos have isolated environments. Thus it can't really reach the same /tmp directory.

Thinking about it makes as a lot of sense.
A workaround would be s3 support i guess. Unfortunately i personally can't implement that right now. But i think it would be worth the note in the README that it only works on heroku under certain conditions. Simply to save the time of the next person ;)

best wishes
Andreas