Please recommend other interesting email services by your experience.
I have switched from Google's Gmail to ProtonMail and kMail. I really like both, kMail (by Infomaniak) have very similar app interface to Gmail so you will get used to it very fast and also have big storage for free and very good offers for paid plans ๐๐ผ
It was also pretty hard to find information about it, searching for "ikmail" will get you there easier. I also found out it's technically not available in Canada yet, although I'm sure this shouldn't be too hard to circumvent.