[Users] Multiple addresses.

[Ralf Mardorf]

The original issue for the OP:

On Tue, 1 Mar 2016 22:24:45 +0000, Abrolag wrote:
>Just lately I seem to keep sending to lists, and named user, when I
>only want to send to one or the other :(

So assumed the OP want's to reply to an individual and not a
mailing list, "reply to mailing list" anyway isn't a solution.

Assumed a mailing lists override the "Reply-To" header, the OP still
could use "Reply to sender". This does the trick, without replying to
the mailing list.