I'm using Postfix to receive email then having it dump the emails to a
Maildir. From there I have a ruby daemon using RobustThread which runs
every 30 seconds to process the emails using Tmail. Everything is
working great up to this point. With TMail I'm able to get the parts of
the email that I need.
The only question I have is how would be the best way to get the emails,
from my ruby daemon, into my rails app as a Model and save to database?
You can use Active Record outside of Rails... so you should be able to just load it up and use the Model directly (assuming you aren't relying on something within your model that is Rails specific).