"This is why I purchased the Pro plan but it ended up with just being "aliases" which aren't the same thing :("

Same here !

Please add separate mailboxes for domains, also a option to switch mailboxes within the app would be great...

This is also important to me, and am considering moving my business elsewhere.

I wanted to open this feature request as well.

I use many email addresses under my personal domain, a personal one, a default one, one for subscriptions, one of risking to spams.

Merging all of these addresses under one inbox does not help with anything at all.

I may consider switching to another email provider just for the lack of this feature.

Separate inboxes or at least sub folders for each alias is a requirement.

This is why I purchased the Pro plan but it ended up with just being "aliases" which aren't the same thing :(

Agreed: separate sub-accounts with different logins and inboxes in the same custom domain.

I agree that it would be nice to have separate mailbox

I'm using your Proton Mail Plus with multiple addresses, which I want to use for different purposes (hobbies, billing, personal contacts, business contacts). However, all incoming mail gets dumped into the same Inbox.

Would you be able to introduce a sorting feature?

For example a toggle on the "Inbox" button for mobile app, or a right-click and pull-down menu for the web app?

This is a big one...we need it

This is a big one for me.....we need separate inboxes

All email addresses in the same mailbox is not easy when we have different e-mail for different situations (friends, family, job, hobbies, administration...)

The current system puts all emails into a single inbox folder. If one has more than one email, each email address should have its own inbox subfolder.