ALL punctuation and capitalization in a user name is stripped to be stored in the DB.
The handle is retained at log-in.
You can reach me (Handle: Cletus.D.Yokel) at clet’usd’yokel
That’s how I entered it next to your name in the TO: line to generate this post.
Ah ha. She’d be Clintonsaliar and hasn’t posted since 2016.