Comment 7 for bug 1475915

"In email, [...]" - that's how the article starts.
"This is in contrast with a physical delivery medium in which a courier acting on behalf of the sender can honor the sender's requirements for delivery" - minus the physical part, consider Telegram that courier, which defaults to requiring report of delivery for all senders. For most users, it's a feature, not a bug.

Folks, we can nitpick on this, but this really distracts me from working on second major revision of the app. I have reached out to Telegram, expect an official reply shortly.

Lastly, if Matthias is so concerned about privacy, why post your phone number to a public mailing list? (I'm not picking, just pointing out seeming lack of consistency in the matter you're pursing.)