I've had good luck. Reliable and fast as any other service.

I'm a 3rd year subscriber of the Unlimited plan, $158 for 2 years at a time. I utilize the drive, aliases, mail and VPN.

No real complaints. I still use Google calendar because it integrated more with Android phone. I still consider going back to Gmail occasionally for simplicity. I really hate Gmail though but email is garbage. Does it really matter?

I basically priced out good vpn's, and the two year price of proton was pretty similar to most other quality VPN plans. So why not stick with it and get the rest of the ecosystem too.

I don't think about it too much, it's email and it works.

I do not care about secure email because I don't communicate with anyone else using it, but I do like how it automatically blocks trackers and cleans email links for me.