Dr Teeth wrote:

No. As you suggested, they are aliases for one account/mailbox. This
works for about 85% of the time, can it be made 100%?

I do not want nor need discrete email accounts, but no doubt could get
this organised if it would guarantee the 100%.

Since Outlook can have multiple connections open, it can access the accounts
asynchronously. Since they're aliases of each other, Outlook has a
statistically significant chance of downloading any of the messages (which
are all in the same mailbox on the server) in any of the accounts. As far
as Outlook is concerned, they're all addressed to the same address.

I don't think that with your arrangement there's any way to guarantee which
account downlaods which messages. You could download them all with a single
account, if you wanted.
--
Brian Tillman