UPDATE (later the same day): I’ve forgotten to mention that you can easily delete all mails from a folder in the Smartphone (and, of course, the Pocket PC) version of FlexMail. To do this, you must be in the folder view (as in the first FlexMail screenshot; in there, it’s at position 3), highlighting Inbox, and select either Menu / Folder / Empty or press Action and select Empty from the context menu. Note that Empty will not be shown at all (or disabled) when there are no messages in the given folder to be deleted.
This makes it much easier to delete all messages in one step and also makes it unnecessary to install AEBPlus if you want to not only mark read the entire contents of a folder, but also delete it.
UPDATE (03/14/2008): thanks to
my blog reader looeee, I've noticed the MS Smartphone version of WM6 supports similar numeric (dialpad) shortcuts to approximately the same functionality as in Flexmail (see Section 1.2.2.3). The only difference is that you must keep the given button depressed (that is, press-and-hold) for the given functionality to be invoked - instead of the standard searching. The shortcut list (which can be brought up by press-and-holding the 0 button) can be seen in the following screenshot:
Again, this is WM6 MS Smartphone only - it doesn't work in WM5.