When you give us your mail we print it, insert into envelopes, and then give it to the USPS for delivery.
We do not have any control of your mail once it's handed off to the USPS. Similarly to if you take it to them in person, once you hand them your mail over the counter, it's completely in their hands.
The USPS is typically successful with delivering certified mail, but in the event that they do not successfully deliver a letter, you can always attempt to reach out to them to see if they are able to assist further, otherwise, you will simply need to re-mail it. Keep in mind that the USPS does is not able to guarantee perfect delivery of certified mail.
Below are a couple of methods on how to reach out to the USPS.
Contact the USPS By Email:
Contact the USPS By Phone:
1. Call (800) 275-8777
2. Select the option for "tracking a package"
3. It will ask for your tracking number multiple times, but don't give them your tracking number. Once it is finished asking for your tracking number it should say "transferring to representative", which should get you to a real person