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Sandboxx Letters

Military Mail, Made Simple.

Send letters, photos, newsletters, gift cards, and more to your recruit from anywhere, anytime. Get delivery updates, weekly training updates and build a community of support to help your recruit through training.

Write Your Letter

As Easy As Sending a Text

In most cases, we’ll update your recruit’s address when they register at basic training.

This means it’s already preloaded and once you download the app, you verify your connection to them and just start writing.

Add Photos

Never Miss a Moment

There’s no need to print anything — that’s our job. When you’re done writing, add your photos.

With Sandboxx+, you can send 4 photos per letter. A picture is worth a thousand words.

Send Newsletters

Stay Informed, Stay Motivated

Add a weekly newsletter to keep your recruit motivated and informed and send stamps so they’re not worried about postage.

Add Gift Cards

Gear up with Gift Cards

Exchange gift cards help ease the financial burden while they’re in training and let them focus on training, not banking.

Send Your Letter

Leave the Rest to Us

Once you are done, we take care of the rest.

Submit your letter by 4:30 p.m. ET Monday through Thursday and we ensure next-day delivery to your recruit’s basic training or bootcamp mailroom.

Track Your Letter

Watch it all the way

Letters are sent via FedEx directly to the mailroom on base. The base mailroom distributes them to the boot camp units. 

Any Letter to non-basic training addresses will be sent via USPS First Class Mail.

When will my Letter arrive?

Get Weekly Updates

Learn about their training

You will get weekly updates on what they are going through in basic training that week.

Here’s a sample – “During the past few weeks your recruit has been learning about standing a proper watch, seamanship, firefighting, and damage control, and has been working hard to become physically stronger.”

Invite OtherS

Build a community of support

Create a support squad so their friends can keep in touch and follow their journey. 

Donate your letter credits to the squad and ensure your recruit is receiving the moral support they need.

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Get The App With 2.5M+ Downloads


Every Sandboxx Letter includes
  • SUPER Fast Delivery (1-2 days avg.)
  • 1 photo per letter
  • Stationery for them to write back
  • A pre-addressed return envelope
  • Tracking and delivery confirmation
  • Weekly training updates from the base
  • And More...

What’s In a Letter

Every Sandboxx Letter includes your custom message (up to 6,000 characters), one or more color photos, branch-specific return stationery, and a pre-addressed return envelope.

Select A bundle

2 Letters

  • Everything included in a standard Letter

5 Letters

$19.99 $17.99
  • Everything included in a standard Letter and ...
  • Save $2
  • 3 More Letters

20 Letters

$79.91 $54.99
  • Everything included in a standard Letter and ...
  • Save $25
  • 18 More Letters

Snail Mail vs SANDBOXX


Snail Mail

Sandboxx Letter

Track letter all the way to base

Pre-addressed return envelope

Printed on Mohawk™ premium paper

Reply stationery included

Iconic air-mail outbound envelope

Reply mail notifications

Pre-sorted for faster delivery

Weekly training updates

Chat with military life experts

Amazing Customer Support

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