I checked the manual for a way to convert the compared text to upper (or lower). I didn't see a TRAN=LTOU on an OMIT COND statement. I was considering putting the LTOU conversion in another step where I would convert the whole file to uppercase, but I was looking for an all-in-one.
This OMIT worked for most, but I'd have to code for the different variations that a user could possible type (i.e. @SomeDomain.com, @SOMEdomain.com, etc).
I guess this is what I was trying to achieve. =)