Microsoft Outlook vs Thunderbird: Which is best for you?

Overall, Outlook is a solid, dependable email and productivity platform that’s well-suited for professional and business use. While it has a learning curve and occasional performance issues, its reliability, integration, and organizational tools outweigh its drawbacks.

It also has a few glitches with showing read vs unread emails and the number of unread emails icon on mobile doesn’t update in real time.

Thunderbird is free and allows to manage multiple accounts email, so if you want to save money and use a regularly updated program without problems about licenses/demo/trial etc., you are doing the right choice.

Some of the styling is a little bit lacking but I need to be fair and say I've not tried to look for settings to change it