When to use this email
Your company made a mistake that affected the customer: a billing error, a bug, a missed commitment
A customer is owed a genuine apology, not a templated "sorry for any inconvenience"
You want to repair the relationship and keep the customer
Tips for making it yours
Apologize in the first sentence. Don't bury it under context
Own it plainly: "the mistake was ours" beats "mistakes were made"
Pair the apology with a concrete fix and a timeline, or it rings hollow
Offer to make it right only if you mean it; an empty gesture reads worse than none
