So Thunderbird requires a browser engine? I didn't think an email program was dependent upon a browser. I would expect one that was to be inefficient. Like a lot of people I work with use Outlook inside of Microsoft Edge. And I just look at them like they're crazy. Our workstations are powerful enough that there's not much difference, but why would you do that to yourself? (No, I'm not going to ask them. I don't want to hear their reasons. And it's not really hurting anything.)

[–] infeeeee@lemmy.zip 1 points 1 day ago

Emails are html, a lot of things under the hood are similar, they don't have to reinvent the wheel if they start from a browser. Mailspring (mentioned in the thread) and afaik the new outlook (not outlook classic) are electron apps, so they are just a chromium windows.