I never got a steam key, even though my itch.io email and paypal email confirming my purchase shows I bought it on the 1st (so before the cutoff on the 2nd) at 7:40 pm EST. I guess because March 1st was a Sunday, so there's a delay with processing things on the weekends?
My itch.io and paypal use the same email, which starts the way you mentioned. I also checked my spam folder throughout the day and there's nothing there, so I'm not sure what's going on. Technology is great, until it does stupid things like this. -_-
EDIT: Well, it showed up, but very delayed. -_- Not sure what the problem was, but sorry for the trouble, and thanks for answering.