rescript

Is your feature request related to a problem? Please describe.
We can't send emails without using postmark service

Describe the solution you'd like
Allow using local sendmail command to send emails

Describe alternatives you've considered
Allowing to use an smtp server directly would be another option

Additional context
Action Mailer already supports these methods, so w

Or I have missed it? Couldn't find it in this repo, so I guess is missing.

This app is very useful maybe local notification and sound alert after finish run time is more useful.