Respected Sir/ Madam,
This is to inform you that my name is ___________ (name) and I am living as a tenant in your property _____________ (mention property address).
First of all, I apologise for the delay in payment for the month of ______________ (mention month). This email is to state the reason behind the delay rental payment is ___________ (mention reason for payment delay). In this regard, I have already made the payment and clear all the dues on __/__/____ (date) via ___________ (mention mode of payment).
I believe that you would accept my sincere apology and forgive me for the delay. I ensure this won’t be repeated again. I look forward to your kind response in this regard.
______________ (Your name),
______________ (Contact details)