While trying to create what I thought was a simple view filter to show mail
items sent in the last 30 days I've learned that Outlook doesn't accomodate
this via simple configuration. I tried doing an Advanced filter but I'm
still constrained by the same limitations (e.g. last 7 days, last month...).
I'm no wiz with SQL but it seems this is the only place where I can
accomplish what I'm after. I tried the expression below but it didn't pass
the SQL parsing:

"urn:schemas:httpmail:date" = today() - 30

How can I apply a filter that will show me all email sent in the past 30 days?