After you've written a letter, it's important to keep a couple of things in mind before you send it. If there is a chance that you'll need accurate records about delivery and receipt, be sure to use a form of delivery that you can verify. That means that the letter or document might need to be sent by Certified Mail Return Receipt Requested or Signature Confirmation if you use the US Postal … [Read more...] about Proof of Delivery of Important Communications