I want to apologize for some mistake in official mail and want to make them sure I will not do that again.

"I will take care of this next time" .


"I will take care of this onwards".

  • take care of something means to handle something.
    – Lambie
    Commented Apr 7, 2021 at 19:47

3 Answers 3


You could simply say:

"I apologize for the error and it will not happen again."


Steve's suggestion is the best, but if you want to apologise in a more formal way, then: I deeply regret what occurred, and I promise that I will make every effort and do everything in my power to prevent its reoccurrence. (Very formal)

  1. I'm really sorry for XYZ (i.e. for what happened). It won't ever happen again.

Suitable for many situations where you realize you have made an awful blunder.

  1. Please forgive me. I committed a terrible error of judgement.

This could be said to a family member or a friend when you need to express contrition. You can forgo the second sentence.

  1. Please accept my/our (most sincere) apology/apologies. Needless to say, it will not happen again.

Terse and very formal, perhaps more appropriate in a business environment.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .