Apologize letter for incorrect mail

Here is a sample apology letter for incorrect mail:

[Your Name] [Your Address] [City, State, ZIP] [Email Address] [Phone Number] [Date]

[Recipient's Name] [Recipient's Address] [City, State, ZIP]

Dear [Recipient's Name],

I am writing to apologize for the mistake that occurred with the mail I sent to you on [Date of Mailing]. Unfortunately, the package was incorrectly addressed and was delivered to the wrong address.

I want to assure you that this was an honest mistake and not a deliberate error. I take full responsibility for the mistake and am truly sorry for any inconvenience or frustration it may have caused you.

I am taking immediate action to correct the issue and ensure that the correct package is delivered to you as soon as possible. I will also make sure to double-check the address before sending any future mail to prevent similar mistakes from happening.

If you have already received the incorrect package, please return it to me at your earliest convenience. I will make sure to properly address the package and send it to you again.

Once again, I apologize for the mistake and any inconvenience it may have caused. If you have any questions or concerns, please do not hesitate to contact me.

Sincerely,

[Your Name]

You can modify this letter to fit your specific situation and needs. Remember to include the following:

Remember to proofread your letter carefully before sending it to ensure that it is professional and effective.