You can now send emails to the inbound MTA, which will forward them
to the Django MDA. You can then read them (served through REST) from
the frontend and compose a reply! The frontend will POST the message
to Django, which will build an RFC5322 message and send it to the
outbound MTA, which will relay it to the local mailcatcher where you
can view your reply. Phew!
Initial documentation in the README but this is the core loop that
will be expanded upon, with diagrams and videos!