Why don't you just use the search bar - the default is to search
>
>
> My mailbox is normally sorted by date, recent first. When I click "TO"
> column to sort by surname, it sorts by surname but looses the 2nd
> level sort by date.
>
"Subjects or Addresses Contains" so will pick up the name in the To:
header, or if that's too nebulous, you could select "Recipients
contain". Whichever, the list will still be sorted by date.
On Wed, 2014-02-19 at 22:32 +0400, Emre Erenoglu wrote:Right-click the message list header bar, select "Customize Current View"
> My mailbox is normally sorted by date, recent first. When I click "TO"
> column to sort by surname, it sorts by surname but looses the 2nd
> level sort by date.
and you can tailor your sorting options however you want. You'll have
to excuse the antiquated UI, though. It's ancient.
After that, if you want you can do View -> Current View -> Save Custom
View, so you can quickly return to your custom sorting in the future.