> Yes they need to get email in space. It's easy way to send documents back and forth.

To me that's probably much more interesting. We assume they have all this fancy NASA tech, probably some special communication protocols, but nope, email is fine. Still not sure why they'd use Outlook, but I guess it's easier than retraining astronauts on Alpine or Mutt.

How long did the US military rely on mIRC... decades, maybe they still do?

I don't know why people are surprised by this. Using suitable off-the-shelf solutions for non-mission-critical purposes seems like a very reasonable thing to do.

I'm recalling this from my memory of "The Space Above Us" podcast: There were various bespoke teleprinters sent up on early shuttle flights that had exciting failure modes (if I remember correctly one of them started smoking) and in at least a couple of cases they had to stow the new hardware and pull out the old backup hardware because the new stuff didn't work.

Yeah, the only other option I’d consider for this would be Apple Mail on an iPad for the same reason that it works well offline or with low bandwidth networks. There’s a QA issue here but the logic is quite reasonable.

Email(smtp) is not a bad choice for messaging in space(or anywhere really) it is a well understood robust protocol designed in a time when all networks were slow and intermittent. Exactly what you need in space.

IMAP probably not so much, It depends too much on having a good network. unless the imap server is on the spaceship(heh, spaceSHIP, that is an optimistic term, but it is all we have, so going with it), I would not expect it to work all that well.

I am not very familiar with outlooks game, Historically my beef with with it and thunderbird was their local data store, I mean it was not strictly speaking bad, but I was like "we have this great Maildir spec, why are you using this propriety database that is prone to corruption, even if you don't like Maildir million files approach at least use sqlite"

I quit Outlook and went to Thunderbird when I upgraded my CPU and Microsoft told me I had to re-purchase Outlook when I had paid for a "lifetime license". That was the last straw for me. I installed Linux and Thunderbird and have not looked back at Windows.