User: lUomino

We introduced a bit more info to reduce clashes

On: Ask Slashdot: Name Conflicts In Automatically Generated Email Addresses?

We went with []@domain.tld

where

<cohort year> is the two-digit year of expected graduation (I won't be here in 100 years!)
<number> (starting with 2) is used only if disambiguation is needed (in only a few percent of the cases)