Each Sandboxx Letter includes a pre-addressed envelope for your recruit to write back quickly and easily. The reply postage means your recruit won't need to add their own stamp to send letters to a U.S. address.

*In order for the reply postage option to appear, your return address must match the official USPS address format. You can check your address formatting here.

*Additional postage will be needed for overseas locations.

In the upper right-hand corner of the envelope, the postage area will say First Class Postage Paid.

There will also be a notice included in the envelope with your letter to let your recruit know that reply postage is included.

Here is an example of what those look like:

Once a letter has been submitted, it is not possible to add reply postage.

Alternatively, you can purchase stamps through the Sandboxx Shop.

At this time, reply postage is available for letters with a return address in the US or US Territory.

In order for the reply postage option to appear, your return address must match the official USPS address format. You can check your address formatting here.

Letters from your recruit will come via USPS First Class Mail. We aren't provided tracking details on letters sent home.

Please reach out to our Customer Happiness team via chat or by email at happiness@sandboxx.us