I sent out two group emails yesterday, one to people I would like to be in my first group of interviewees, and one to people I want to interview later in the year - and I put the email addresses in the To field instead of the BCC field.
I can't believe I did it - it was an honest mistake, not something done through ignorance, but I feel absolutely dreadful that I could do something so stupid. I didn't sleep last night and I still feel sick. I am so angry with myself. Several recipients have got back to me, pointing it out (though none have withdrawn from the research or complained or anything like that), which almost makes it worse - if no one had noticed I'd still feel bad but at least it wouldn't be quite so embarrassing.
So I'm spending today trying to find the right words to use to send another email out to them (BCC'd this time, obviously) apologising and reassuring them that their anonymity within the study won't be affected.
So, this isn't a question, it's more like a confession to the rest of you. And it would be very reassuring if anyone else has done something this daft at some point during their PhD...!
Sarah