Feature request: Automatically request read receipts on outgoing email

I’d like an option in Proton Mail settings to automatically request a read receipt on outgoing messages, rather than having to remember to select Request Read Receipt manually for each email.

Ideally, this could include:

* an Always request read receipt toggle
* optional rules by recipient, contact, or domain
* the ability to exclude casual/personal messages while enabling it for business or important correspondence

This would be especially useful for documentation requests, financial correspondence, warranty/service issues, and other situations where confirmation that a message was opened can be helpful.

I prefer Proton because of its privacy and encryption, so a native read-receipt option would be much better than relying on third-party tracking pixels or extensions.

Even a simple default setting such as “Request read receipt for all outgoing messages” would solve the problem.