Per-message activity log
Please add a mailbox activity log showing, for each email, when it was received, moved (and to which folder), trashed, or permanently deleted, with the sender and subject visible to the account owner. What if an attacker deletes an email?!!?!?!?!?!?!
The current web app logs record actions like "Moving 1 element(s) to trash" but don't identify which email was affected. As a result, there's no way to confirm whether a specific message arrived or what happened to it.
The sender and subject could be decrypted and shown client-side only, so this wouldn't weaken privacy. Many other email providers already offer this, and it would make Proton Mail much easier to troubleshoot.
Thank you.