Apology letter to boss

Dear Mr./Ms./Mrs. {Recipient’s Name},

Please accept my sincere apology for sending wrong reports to the client. I understand this has caused a lot of inconvenience to the client and our company.

I cannot defend my actions, but I want to tell you that I am handling four projects simultaneously. I got confused and mistakenly sent the wrong reports. I am truly sorry for such a lousy mistake.

I want you to know that I have already apologized to the client personally and sent the correct reports. I have also arranged a meeting with the client to eliminate any chance of miscommunication about our reports.

Kindly suggest if any other remedial step should be taken from our end.

I understand your disappointment, and I am truly sorry. I can assure you that this mistake will never be repeated in the future.

Yours Sincerely,

{Your Name}