F O.

Protonmail has done so wrong that I am writing a review about it to save others from damages. Personally, I have had the worst customer service of my life for a paid account. Their responses weren't even to the specific questions, to the point I thought bots were responding. I should have run then. Almost did, but just put up with it in the interest of privacy and time.
Finally, like others, my account got blocked although I had made payments. They did not return my money and I am still waiting for my account to reopen. I sent multiple emails over days, but have yet to receive a reply. It's been such an extreme case, that I decided to do a little legwork and found so many people complaining about losing access to their email for some reason or other. This happens, but what doesn't happen is the extreme bad response you get, if any, from their customer service for paying customers. I am writing this to say buyer beware. I wish I had known before they caused me damages. After doing some research, I have now happily switched to another email provider. I won't mention the name in case anyone thinks I wrote this to plug someone else, but just do your homework and you'll find competitive options. Protonmail is not the only show in town, but it is one of the most poorly run email providers and certainly the only one that has received such extreme, bad reviews from paying customers.