(apologies in advance if this isn’t the right community for this question)
I’ve been flirting with Linux on and off for about 15 years and I think I’m ready to make the switch mostly full-time. I use a laptop for work and have a Microsoft 365 plan with email and such. I need to replace that with something Linux-friendly and would much prefer something that works with a desktop email client. Easy syncing of email, contacts and calendar to Android is a must.
Proton seems like it might be a good option but the privacy features aren’t a huge selling point for me so I’m open to other options!
Try thunderbird
I love Thunderbird, but I wouldn’t recommend it for Microsoft 365. You can add the mail account via IMAP (if you turn off Security Defaults), but I don’t believe there’s a way to get Microsoft’s contacts and calendars to sync up, since they don’t support CardDAV or CalDAV.
It doesn’t support syncing contacts and calendars out of the box, but there are plugins that will let you sync both. I used Thunderbird successfully with MS365 in 2019-2020.