Dadgummit! I feel like on 70 years old working with this new fangled world wide web business lol!
Bout on a serious minute, I'm 31, super tech savvy, and work IT(like actual creative trouble shooting, not reading a company manual)... I say all that to say that even with my vast tech knowledge, I cannot figure out how to remove the default read receipt setting! I've never liked read receipts so I hate when I forget to uncheck the box! I always feel like I'm giving the impression of a stalker when I PM a provider and that damned read receipt pops up on them!
Does anyone know you're you permanently disable it? Or a good WikiL work around? And ladies, if you're reading this and you've gotten a read receipt request from me, you have my sincerest apologies.