Sandboxx

Sandboxx

Connecting our Military

163K ratings
801 reviews
Free

Details

  • Released
  • Updated
  • October 7, 2014
  • July 13, 2026
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About

Easily send digital letters, photos, and gift cards to service members in basic training and beyond. Receive weekly training updates and access military news and products. Developed by veterans to support the military community.

Digital letter writing
Overnight shipping
Letter tracking
Weekly training updates
Military news
Gift card options
Veteran support staff
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What users say

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+1

What's New in Sandboxx

20.47.0

July 13, 2026

We update Sandboxx frequently to support you throughout your military journey. This release includes: - Updated onboarding to help grow your support - Updated Sandboxx Community - General performance improvements and bug fixes Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.

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Charts

Top Free

📉 67-1

Lifestyle

This app dropped -1 position in Lifestyle chart.

Last updated on July 19, 2026.

User reviews

Works

Hope I never have to use it again 🫶🏻

Inaccurate delivery

The app says my son received letters on the eighth but he wrote me on the ninth and said he hadn’t received anything. So there’s a delay they don’t account for it was very disappointing to find that out. I’m also not happy with all the hidden costs.

Great accessibility

I am a totally blind. Mom and my daughter is away for basic training. I am so excited to have an app that I can use independently to send her letters. I would have had a harder time typing up letters to send in the mail and this makes it so much easier. I’m so impressed by the ease of which I can use all of the features.
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easy

I love the app; it's very easy to use, and thanks to it, I can write letters to my daughter.

My girlfriend loves the letters

I can send letters to my future wife while shes at fort lost in the woods, she loves it and wishes it was cheaper but anything for my baby:)

Developer apps

User experience

🐞

Reported Bugs

3 issues

Login issues and password reset problems

Bug

Inconsistent letter delivery tracking

Bug

Incorrect recruit information entered by Sandboxx

Bug

Requested Features

5 requests

Allow editing of letters before sending

Feature

Increase photo upload limit

Feature

Provide refund or credit expiration policy

Feature

Improve in-app search and address management

Feature

Sync weekly updates with recruit's actual schedule

Feature

FAQ

What does Sandboxx do?

Sandboxx is a mobile application designed to support service members and their loved ones throughout their military journey. It allows users to easily send digital letters, photos, and gift cards to recruits in basic training and beyond. The app also provides weekly training updates, military news, and access to a shop for related products.

How do I send a letter with Sandboxx?

You can write your letter directly within the Sandboxx app, add photos and gift cards if desired, and then send it. The app handles the physical printing, includes return stationery, and provides overnight shipping to the recruit's base. You can also track your letter's journey from Sandboxx HQ to the base mailroom.

Is Sandboxx free to use?

The Sandboxx app itself is free to download and use. However, there are in-app purchases for sending letters, adding gift cards, and purchasing items from the Sandboxx Shop. Users can also earn free letters by referring friends and family.

What kind of support does Sandboxx offer?

Sandboxx offers comprehensive support for those sending mail to service members. This includes a fully digital letter writing experience, overnight shipping with tracking, weekly updates on recruit training progress, and access to military news. Customer support is also available, staffed by veterans and military spouses.

Who is Sandboxx for?

Sandboxx is designed for anyone who wants to support a service member, particularly those in basic training or deployed overseas. This includes parents, spouses, siblings, friends, and other loved ones who wish to stay connected and provide encouragement.