Ditto on what Tom and Trevor said. Very simple solution is to let each user decide via their Settings. When receiving email read receipts should be: 1) automatically sent, 2) ask before sending or 3) never sent. ... Privacy is still "provided" by ProtonMail and any "comprise" is the user's choice.
And while on the topic, allow sender to also have similar option in their Settings. When sending an email: 1) Always request a read receipt, 2) Do no request a read receipt. In addition, allow sender to have ability to override this setting with each email sent.
Chuck
Ditto on what Tom and Trevor said. Very simple solution is to let each user decide via their Settings. When receiving email read receipts should be: 1) automatically sent, 2) ask before sending or 3) never sent. ... Privacy is still "provided" by ProtonMail and any "comprise" is the user's choice.
And while on the topic, allow sender to also have similar option in their Settings. When sending an email: 1) Always request a read receipt, 2) Do no request a read receipt. In addition, allow sender to have ability to override this setting with each email sent.