Another issue you may have some ideas on - One of the people who regularly emails me, finds it almost impossible to email on one of the accounts I use and I only realise he has done so if it has been sent to several people and they reply to all. I've checked the address he uses and it's correct. I copied direct from his email and sent it to myself and it worked. So why didn't it work direct from his account to mine.
Apparently my DH has the same problem with another person.













