ProtonMail

10 of 10 email I have tested!

Comments: Since they started the beta testing a few years back, it's been fantastic for me. I've been able to do email migrations with both the premium and free versions that I've used. It is, in my opinion, the best email choice, even for businesses.10 out of 10.

Pros:

Pro, with this encrypted email service, user privacy is prioritized. Not all providers offer this crucial service; instead, the majority mine your data and sell it to outside parties. Good luck in finding other one!

Cons:

Cons: Starting to handle it can be a little confusing at first.

Excellent product - secure and easy, but not limiting for hardcore users

Comments: I am delighted since I started using ProtonMail: the migration has been easy, although it took some time (but this is 100% due to a personal choice to rewrite almost from scratch my email setup and usage), and it simply worked out of the box. Not many bugs encountered as of now, no spam, no deliverability issues. The interface is clean and good looking, and it's a pleasure to work with. The help documents and guides are tailored more to the average user, and makes setting it up a breeze. I'm really satisfied and just subscribed for two years.

Pros:

ProtonMail does a great job of keeping email simple (as much as every other email provider you may have experience with) but at the same time with a lot of powerful tools, likeHTML signatures, SIEVE filters, email aliases, many security options (E2E encryption by default, but also Sentinel and session management), trackers blocking, and a privacy-by-default and privacy-by-design policy (some of these are premium features for paying customers).

Cons:

The only gripe I have with the Proton ecosystem is that its development is VERY slow, and announced features might take years before release. This is well known and, for me, perfectly acceptable in the end: security, privacy and releasing working features takes time, especially when you are supporting many platforms. Unfortunately there is not much feature parity among platforms.

Good second/backup email

Pros:

It is easy to use. Has most features of famous email service providers.

Cons:

The free storage is not enough. The graphical interface is very simple and doesn't have many alternatives.

Expensive, restrictive, poor support

Comments: I have been using Protonmail Business (their highest tier) for about a year. I wanted a reliable e-mail service I could use for my freelance work and a few of my personal websites that did not harvest all of my data. ProtonMail was more expensive than pretty much any other e-mail service, presumably because they force you to buy their password manager, VPN, drive, and calendar solutions. I did not need all of these solutions and never used them, nor did I want super-secure e-mail. Nevertheless, I signed up for a 2-year Business plan because of the good reviews, 15 custom domains, and the unlimited SimpleLogin addresses. The first surprise came when I tried to set up my e-mail client. Turns out that Protonmail does not offer SMTP/IMAP and there is no desktop app either (well, there is but it's in closed beta for ages). Using other clients requires installing and configuring protonmail-bridge (a sort of e-mail proxy).
This is an acceptable workaround for PCs, however, it is complicated and often impossible to configure for web servers, in particular virtualized or hosted setups. I tried a few community alternatives to protonmail-bridge but ended up having to restart the services daily because the bridge would randomly crash without any warning or error. Support was next to useless. Taking days or weeks to reply with boilerplate text that had nothing to do with my case. Eventually, I decided to migrate all business-critical mail away from Proton. MXRoute offers unlimited custom domains (and a lot of other cool things Proton does not) for a lifetime price that is equal to a yearly subscription to Proton, so I went with them. I decided to cancel my Proton subscription to avoid being charged for another 2 years. Worst of all was what happened when I tried to cancel: despite having paid for 2 years, as soon as I canceled my subscription, I INSTANTLY and WITHOUT WARNING lost access to all premium features for the remainder of the period (about 1 year). This means that all of the addresses I created for custom domains were deleted (luckily I had already migrated them). It also meant that all of my e-mail clients stopped receiving or sending mail because protonmail-bridge is not available for free-tier... Even Google lets you use the remainder of your subscription when canceling...
Even my SimpleLogin aliases are going to be disabled because - get this - since Protonmail bought SimpleLogin and bundled it with their product, aliases are disabled when you downgrade (instead of just restricting your ability to create more like SimpleLogin used to to). I begged support to convert my credit to a SimpleLogin or even a Proton subscription but they refused. My only option is to purchase a significantly more expensive monthly subscription for 5 months (instead of the 9 I had left). Maybe ProtonMail was at some point customer-oriented. But my experience with them has been the opposite: overpriced, restrictive, unfriendly money-grabbers. Which frankly leads me to question their privacy and security claims as well.

Pros:

zero-access encryption, unlimited SimpleLogin addresses, custom domains

Cons:

- They force you to purchase their Drive, Calendar, VPN and Password Manager which means even the cheapest plan is very expensive compared to competitors. - There is no desktop app and using other clients requires installing and configuring protonmail-bridge (an e-mail server proxy) - The custom domains are useless because they do not offer SMTP/IMAP servers and protonmail-bridge does not work on any sort of virtualized webserver setup -> understandable because of the E2E encryption. - Their support is slow to reply and usually replies with boilerplate text that is not helpful or relevant. - I deactivated my subscription with 1 year remaining and instantly lost access to *all* premium features without any warning.

The UI makes it an easy switch from Gmail

Comments: An easy switch from other email service providers. The UI offers great user experience and is very appealing to my eyes in comparison to the like of Tutanota Mail.

Pros:

My friend recommended Proton Mail to me sometime back. I have come to like it. Notably they have an Easy Switch feature which I used to move my emails from Gmail and I didn't loose any information whatsoever. The UI in Proton is very user friendly and almost similar to Gmail in my view. I was able to adapt to it easily and haven't regretted the switch. Having been very accustomed to conversation grouping in Gmail, finding this feature in Proton Mail greatly improves my workflow. It is somewhat even better than in Gmail. For example, I am able to keep my emails less cluttered and improve my storage space. This is because in Proton, once you delete the conversation say in the inbox folder, same conversation is deleted in the sent folder. Saves a lot of time for me. This feature lacks in Tutanota and was a deal breaker.

Cons:

Well, the very same cool feature of Conversation grouping / view is also my stress point. I find Proton has very high level of inconsistency across the various platforms. Conversation view is unavailable on the Android platform and just makes my head go wild. Why is it so hard to have similar features across multiple platforms? I hope future updates shall address some of these issues.