Using Linux for work - need a good email/contacts/calendar system

(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!