Courteously, I write this email to inform you that I am _________ (name) working as a _________ (designation) in _________ (department).
This email is in reference to the task assigned to me on date __/__/____ (date). I would like to notify you that I had to update the ___________ (mention work record information) before __/__/____ (date). But unfortunately, due to ____________ (mention reason for not updation) I got late in updating you regarding the same.
Therefore, I deeply apologize for the delay and I assure you that I will update you with the ___________ (mention work record information) records within _____ (days). If you need any further information, please do not hesitate to contact me at any time.
Thank you for your time and consideration. I shall be highly obliged.
___________ (Contact details)