Unattached
It happens to everyone now and then: you want to send some file by email, but you forget to actually attach it. It was my turn this morning. No big deal, because I immediately noticed, so I send a second email with my apologies and the correct attachment.
Or so I thought.
Of course, this was Monday morning, so I hadn’t quite woken up from the weekend yet. The first email went without an attachment. The second email went with an attachment, but without any recipients (except for the standard BCC to myself). It took me a few hours and two replies before I figured that out and could send another email, this time including the attachment and all the recipients.
Yeah, that gives a really good impression when emailing a professor (whom I’ve never met and who’s probably never heard of me, though he knows my supervisor well) to get his thoughts on a problem I’ve been trying to solve for two weeks now.