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Download the Latest SANDBOXX App on Google Play & the App Store

Download SANDBOXX 3.5 for the most up-to-date features and support...

Send Letter | Connect with Units | Book Military Travel 

SANDBOXX Letters

Sending letters to basic training, boot camp or on deployment directly from your phone has never been EASIER or FASTER. Your letter will be processed the SAME DAY if your order is placed Monday-Friday before 4:30 pm ET.

Receive weekly updates on what your recruit/trainee is doing for the week.

Units/Kin Units

Find every unit you have ever served with and stay connected. Keep those who matter most to you close by connecting your friends and family.

Share you SANDBOXX experience on social with the hashtag #SandboxxLetters. Post a picture sending or receiving your letters with the same hashtag to help spread the word and to keep our military community connected.

 Download SANDBOXX for FREE from the App Store and on  Google Play


SANDBOXX is a mobile app focused on connecting our military community. Army | Navy | Marines | Air Force | Coast Guard

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