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.
I love mine, they improve the apps/services and add useful features frequently, they have a great customer support and all the features id expect for services like theirs are presented. Things id improve is speed for the mail client, upload speed for the drive (maybe impossible because of encryption) and better cross-service integration.