@ElectricKeet When I cared to, I either just used Thunderbird or Outlook. Mostly because the worked good enough for my purposes and I didn't have any special requirements for interface or fonts beyond what they were capable of. Of the 2, I actually preferred Outlook just because the interface was the same as what I had to use for work, so my brain didn't have to work as hard. YMMV
@ElectricKeet Totally understandable!
@kelseyhusky I'm loath to take on anything further from Microsoft, but I might re-open that option if nothing else pans out.