Being emailed by one of your lecturers and being called the wrong name, even though your name is printed in bold... I'd been emailing a lecturer back and forth a couple of times and then she calls me David in one of her replies

I guess it didn't really irritate me but I do find it kinda annoying when people don't double check their emails or work in general... it also said "sent from my iPad" at the bottom of the email so I reckon she was probably watching TV or something at the same time and wasn't paying attention, not very professional