[toomuchtodo]

Definitely. You want confirmation it got to someplace same until delivered to the recipient. 1 check for got to server, 1 check for delivered to recipient device, and then "Read" underneath the furthest part of the conversation that has been read. Or I'm just crazy and niche.

[maxkiener]

I'd say: clock symbol till it left the phone, one checkmark for delivered, another one for read.

[toomuchtodo]

Perfect!