Default emails from team@trailmix.life
Use email reply token instead of today@trailmix
Support old emails to today@ at the same time

There are probably some folks that will take a day or so to reply to
older emails. We should support both until we don't see anyone hitting
today@trailmix.life.
Remove unnecessary reply token parameter
Merge branch 'use-reply-token'

* use-reply-token:
  Remove unnecessary reply token parameter
  Support old emails to today@ at the same time
  Use email reply token instead of today@trailmix
  Default emails from team@trailmix.life