Create a fake email after the fact

Question

Yandex

Good afternoon.

There was an urgent need to create a fake letter in the outgoing Yandex mail in hindsight.

Who knows this possibility?
ps do not mind paying.

Answer 1

Try to connect to IMAP with the wrong time in the system and put the letter in sent (well, or just try to send - but then it will reach). Only at first not on a target box experiment.

Answer 2

Make a fake email, set up a POP3 server and set up a fence from this server.
habrahabr.ru/post/138460/

Answer 3

It's already late, but still ... There, after all, you can set the date for sending the letter. You can't send it backdated, but you can change the date backdated in the hidden field...