This notice sent by landlord or owner serves as a formal reminder/warning to tenant in case there has been a delay in payment of dues/arrears.
You need it, as a landlord to remind the tenant regarding the rent dues. Also, it serves as a reference for taking action for eviction against the tenant if he does not pay the rent
even after repeated reminders.
This notice cannot be made legally enforceable. This just serves as reference for future actions. The notice should be duly signed by the sender.
You as a landlord may use it to remind your tenant about the pending dues.