My main email is Gmail, I use to send & read in my browser till Google changed it. Thunberbird is now used to read & write my emails using that account. As I have already exlained my problem that seems to have no solution or being understood, I'll skip it. Today, I used my Gmail in my browser to send my brother a message. As usual, the message appeared in TB's inbox. This time my mail was classed as junk in TB. How else con you send junk to your own account.