Dear {Name},
My heart sank when I saw that {error} had made it through to {final editing stage/publication}. I know that nobody's perfect, but I do take it as a personal challenge not to let errors slip through, especially something like {error}.
I'm so grateful that {someone else caught it/reprint is possible/etc.}.
Please rest assured that I will continue to give my utmost attention to each and every proofreading process. I would also suggest {using more editors/a longer turnaround/other potential remedy}.
Sincerely,
{Sender}
Download this apology letter template — free!
Formatted and ready to use with Microsoft Word, Google Docs, or any other word processor that can open the .DOC file format.
Index of letter of apology templates