I sent out a press release for a new client and accidentally placed my media contacts in the copy line instead of the blind copy line and hit send. By the time I noticed my error, it was too late to recall. Luckily, it was not a 380-person national media list like Gloria Allred as reported by the Hollywood Reporter; nonetheless it's not a good look. There is a legitimate reason the mistake was made, however I rather not place blame on circumstance. I acknowledged the blunder by immediately sending an apology to the contacts on the email in the proper blind item format.
The lesson learned is to recognize a mistake happened, accept it and take responsibility for it.