C G Marsh said:
All 4 of my email accounts are directed to two mailboxes on the
server. One that I access and empty from my work machine and the
other which I access and empty from my home machine. I have not
noticed the problem from home, only work although I do few replies
and forwards from home.
If these accounts are POP accounts and two of those accounts utilize the
same mailbox, Outlook can't tell the accounts apart. Account access is
multithreaded. Outlook might access the mailbox with Account A the first
time and Account B the second time, depending on internal timing factors.
As long as it's accessing the same mailbox, either account might download a
particular message, since POP clients simply ask "how many new messages" and
then say "OK, download them" when told how many by the server. There's no
controlling which account will get the message when the accounts are in the
same send/receive group. Outlook certainly doesn't compare mail addresses
when downloading messages.