Currently, Proton email addresses and custom domain addresses share the same mailbox view, which mixes all emails together. This approach feels unintuitive and makes it harder to manage communication across different identities.

I would prefer the ability to separate custom domain email accounts from Proton accounts into distinct mailbox views (or “drawers”). While it’s possible to use filters and folders as a workaround, this requires manually duplicating structure (Inbox, Sent, Drafts, etc.), which quickly leads to a cluttered sidebar and added maintenance overhead.

Would you consider introducing an option to define how email addresses are grouped within the interface? For example, allowing users to choose which addresses share a mailbox view and which remain fully separated.

This kind of flexibility would significantly improve usability, especially for users managing multiple identities or domains.