I have a ProtonMail Plus account, and happy with that.
My wife is also using Protonmail (thanks to me :) ) but only the Free account.
She would love to have the Plus features, but the price tag is high, especially when your are in the same household...
Is there a way to offer a "family bundle"?
The perfect bundle for me would be a Plus account, where another person can share your storage plan (I have 10 GB, so let's say we split in two or I decide how to allocate space), but the other person has a complete control over her/his account. Basically, two users for the price of one (or one and half)...
And the idea is to go farther with your existing products and the ones in the future.
There will be a gap between one person in a family who has all your products (right now = mail + VPN) and others who will use the free versions and say "it's nice, but we live together and we can not afford both having the payed plan. So you have this good service, privacy oriented etc etc, meanwhile I have the free version with its limitations...what's the point? I go for the easy route = gmail, dropbox and alternatives.".
I am absolutely certain, that a nice price for a family bundle, will allow a larger adoption of Protonmail services.
Thank you for your attention :)