Is it possible for SolarWinds to evaluate the value within a custom property to validate if it contains data that's in a valid email address format?
Hmmm...
This would be a start: Check for presence of at symbol (@). Check for a period. Obviously doesn't ensure the @ is before the period. But this might get the most invalid email address formats. Suppose you could cheat and have two properties (who, wherever and reference the properties whowherever). Verify that wherever has a period in it.
Not ideal...just spitballing.
Additional idea...SQL sorcery could probably achieve what you are trying to do. Unfortunately my SQL abilities go as far as SELECT * FROM __ WHERE __ ORDER BY