Apologise late arrival mail

Here's a sample apology letter for a late arrival 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 late arrival of the [package/mail] that was sent to you on [date]. I understand that you were expecting to receive it by [expected delivery date] and I regret that it did not arrive on time.

Please know that I take full responsibility for the delay and assure you that I am taking immediate action to rectify the situation. I have [briefly describe the actions you are taking to resolve the issue, e.g. "re-sent the package via expedited shipping" or "filed a claim with the postal service"].

I want to assure you that I value your business and appreciate your patience and understanding in this matter. I am committed to providing you with the best possible service and ensuring that your [package/mail] arrives safely and on time.

If you have any questions or concerns, please do not hesitate to contact me. I can be reached at [your email address] or [your phone number].

Once again, I apologize for the inconvenience caused by the late arrival of your [package/mail]. I appreciate your understanding and look forward to resolving this matter to your satisfaction.

Sincerely,

[Your Name]

[Your Title/Position]

[Your Company Name]

Please note that you should customize this letter to fit your specific situation and needs.