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Simplify your social unit comms in one place
Connecting Our Military Community
Build Your Military Journey
Letters
Send letters on-the-go to basic training,
those deployed or any military address around the world
Learn More
The Digital Unit
The military journey starts at the recruiting station. Find every unit you have ever served with and stay connected.
Send Letters
Whether it's a simple "I love you", a memorable childhood milestone, or the pup missing his freedom fighter - snap a photo from your phone and write a message just as easily as a text.
In 4 Easy Steps
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1. Sign Up
Create a Sandboxx account with just a few taps.
Download -
2. Connect
If your loved one has already created an account, connect with them in the app. Not connected? You can still send them letters as long as you know their address.
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3. Send
We automatically and privately covert each letter into physical mail. Mail call has never been so frictionless.
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4. Receive
The best thing about Sandboxx letters - we include a pre-stamped and addressed envelope with each parcel for swift return to you. We even include paper to write on.
Letters Are Fast
Send your letter before 6pm EST (M-F) and, your letter will be created that night so it's on the way
First One Is Free
Buy one for $3 or buy a bundle to save. We offer three different packages to choose from
Make A Difference
A percentage of your letters will go to our partner non-profit organizations
Take A Sneak Peek
Easy, Intuitive & Clean
Packed With Amazing Features
Secure - Private - Simple
Our Facts
What's Trending
Our Community Loves Us
The greatest app that I have ever found. If you have a smartphone I recommend it for sending letters to your military family. They know how to take care of you!
Melissa Carter Marine MomI like Sandboxx because it is a platform for service men and service women to keep in touch with each other and their kin to exchange ideas and share opinions.
Jamail Bogany Army SpecialistI really like the new Sandboxx app. Thank you Team Sandboxx for helping us communicate with our loved ones when they're off the grid and away from home.
Jeremiah L Dilley Family/Friend
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