I just watched the pilot again. The email Sherlock gets from Lestrade never fails to crack me up.
First off, he’s sent it from his private email address, which is email@example.com. Not firstname.lastname@example.org or even email@example.com which would make more sense. His email address is his surname @ half his surname . org. WAT??
Secondly, he repeats himself. And Sherlock hates repetition.
Why doesn’t he just text Sherlock? Is Lestrade just so technologically inept he doesn’t realise you can have a free email address? Did somebody tell him he needed to pay for his own domain, just to have email?