POBoxes can cause problems with credit card companies and some deliveries.

Hi BPI'm a 19 year old college student who is also working part-time as a delivery driver at jimmy john's.

Whatever the method of delivery, it’s important that the tenant have proof that the landlord, or the landlord’s manager or agent, received the notice.

Mark Gee suggest you call the local oil companies and see if they can tell you if they've done an oil delivery or tank sweep at that address.

If the landlord proposes to retain any portion of the security deposit for rent, damages or other legally allowable charges under the provisions of this act or the rental agreement, the landlord shall return the balance of the security deposit without interest to the tenant within thirty (30) days after the termination of tenancy, delivery of possession and written demand by the tenant.

Also, many trades are payment then delivery of files.

And I guess Amazon deliveries to the rental won't show up on records.

I have 5 Laundromats, WDF and Pick Up and Delivery services.

Essentially, our Notes require the request to change payment address to be made in writing and submitted to the Borrower's address as listed in the Note by first-class mail or personal delivery. 

Also, add in the fact that they have to keep track of when the tank is getting low so they can schedule another delivery before it runs out.