If you're going to be building this block of code the same way in Perl i.e. using a sub then you could use
return where it has Exit Sub.
I'm sorry I'm on Linux so can't text Win32 MAPI stuff for you, but if your piece of code:
if ($Inbox->Items->$Count == 0)
works (by the way that's
== for a test, not
= which would be an assignment) then you could use:
return if ($Inbox->Items->$Count == 0);
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