I've thinking about purchasing Proton Mail Plus only and just only to have IMAP support, but I've looked all the features that the Proton Unlimited Plan have, and honestly I believe it's worth, but I hate having all the eggs in the same basket.
The features I believe worth the most are the 500GB storage, IMAP support, all the VPN servers with P2P and unlimited SimpleLogin aliases, but when I ask if it is worth the price I mean, the majority of those features I can have them having individually with others services and even at lower price.
My oldest email account is from late 2008 and I've used a grand total of 2.04GB. I say this just to demonstrate how much storage email really needs.
Proton Unlimited - $120/yr, comes with:
500 GB storage
15 email addresses
3 custom email domains
VPN
ProtonPass
Alternatives:
Email:
Fastmail: $60/yr
50 GB of storage
600 aliases
100 domains
Included static site web hosting
Storage:
Wasabi: $7/TB/Mo and more flexible since it's S3 and there are tons of tools for S3.
Password manager:
Bitwarden: $10/yr
The only one I have trouble with is VPN. A while back I would have said Mullvad but unfortunately they don't do port forwarding anymore so not so great for P2P.
I don't know if fastmail is an appropriate comparison as it isn't e2ee and if you're getting proton unlimited, you're probably gonna go for the 2-year plan, which is cheaper, at $7.99/month ($95.88/year).
At least proton doesn't have access to the emails. Also, I actually have used it. This one time this dr asked me to send medical stuff to their yahoo mail. I was like hell no let me send you the password to my encrypted email.
Oh, that isn't the encryption feature I was thinking of. You're talking about a password protected email, not E2EE, though that may technically be E2EE.
That's super shitty of your doc by the way, but you already know that.
I have used the password protected email feature before, once, in the few years I used Proton.
I've also sent password protected .zip files with 7-zip.
It just doesn't come up that often and there are other ways around it. And for E2EE, I have Mailvelope.