Indeed currently not. The reason is that currently there cannot be multiple subscriptions on one account. As another commented pointed out, the team is indeed looking to change that in the future, however there is indeed no ETA or further info yet.
Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
Proton VPN is the world’s only open-source, publicly audited, unlimited and free VPN. Swiss-based, no-ads, and no-logs.
Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
Got the same response. After being a Mail Plus subscriber for years, I felt let down when I wasn't eligible for the Pass Plus sub under the same account.
It would save me money because I currently have a (Proton owned) SimpleLogin sub for protecting my email, which I could replace for the cheaper Pass Plus.
I guess you could try using two different Proton accounts, one for Mail and one for Pass. Although I'm not sure if this will create some UX problem/conflict.
I guess I'm one Proton service away from switching to Proton Unlimited. Although the counter-argument in my head is that I don't like companies that try to provide all in one services, like all of Big Tech.
SL premium does include more features (e.g custom domains, multiple mailboxes) compared to Pass Plus. It you‘d as example count in such features (if you need them) from SL premium + Mail Plus + want Proton Pass, then you could indeed already think of Unlimited.
I do use a custom domain because I'd like to be able to switch from SL if I ever have a reason to do so, but I have no use for multiple mailboxes (yet), so I guess I'll be keeping my current arrangement.
I have no need for the actual password management from Pass, as I'm quite happy with my KeePass + Dropbox (to be moved to Proton Drive when they release a Mac app) setup.
I try not to depend too much in one company/service, but Proton seems to be finding a way to suck me in.
Yes, I thought about two Proton accounts, but the effort is too much for me. I have 2 options now: Not switching to Proton at all, or opting for Mail Plus and hoping the free pass is enough for me. Maybe in the future they will introduce an option to add different subscriptions.
Afaik they‘re working on a solution to being able to combine subs, but no ETA…