If you mistype the file name, the program won't be able to open it.

I realized I had mistyped the recipient's email address and immediately resent the message.

Whenever she rushes through her emails, she often mistypes important names.

A mistyping in the recipient's address caused the package to be delayed.

I'm mistyping his email address because my keyboard keeps sticking.

The editor found several mistypings in the manuscript and sent it back for correction.