Set up forwarding / Auto Forward for incoming Emails (Inbox)
https://proton.me/support/email-forwarding
The Setup up forwarding > Forward from dropdown box expects the selection of a specific Email address hence if a user has N different Email addresses / alias / customised domains, she has to explicitly create a forwarding rule for each unique address based on limited Conditions (subject / sender / attachments).
The auto triggering of Email forwarding whenever a new Email is received (in the system Inbox) – exactly that, independent of any conditions – should be made available as a standard, user-controllable feature, something already found in most other mature Email systems.
Better still, enable this functionality for user selectable system and user created folders (as the Condition regardless of the usual recipient "Forward from" / subject / sender / attachments, etc.).
Thank you for taking up this basic “feature” request soonest.