Sandboxx
8.2 1K+
v20.31.0 by Sandboxx, Inc.
About Sandboxx
Sandboxx (Package Name: com.sandboxx.android) is developed by Sandboxx, Inc. and the latest version of Sandboxx 20.31.0 was updated on March 20, 2026. Sandboxx is in the category of Lifestyle. You can check all apps from the developer of Sandboxx and find 200 alternative apps to Sandboxx on Android. Currently this app is for free. This app can be downloaded on Android 8.0+ on APKFab or Google Play. All APK/XAPK files on APKFab.com are original and 100% safe with fast download.
Developed by veterans with decades of service, our mission is to support service members and their supporters throughout their military journey.
Sending letters to basic training and beyond has never been easier. With over 8 million letters sent to date, we have revolutionized the way you think of supporting your service member. A fully digital letter writing experience, overnight shipping, tracking and the option to add gift cards makes Sandboxx the ultimate supporter tool.
With a growing community of over 2 million Sandboxx users, we are continuing to build more products to help. Get access to base specific training updates from within the app as your recruit progresses through basic training. Refer friends and family to earn free Letters and ensure your service member can receive even more mail.
Check out Sandboxx News to stay up to date with all that's going on in the military space. Grab some additional stamps, newsletters or motivation to mail your recruit in the Sandboxx Shop.
With Sandboxx, we've got you covered for all your basic training needs.
SEND LETTERS TO BASIC TRAINING AND BEYOND
The easiest way to send letters to basic training or overseas. Send a letter, anytime, anywhere. We physically print your mail, include return stationery, provide tracking and overnight it to your recruit at any recruiting base.
GET WEEKLY TRAINING UPDATES
Stay up to date on your recruit as they progress through basic training. Learn about what they are going through on a weekly basis, all accessible within the Sandboxx app.
LEARN MORE WITH SANDBOXX NEWS
Your essential source of news from within the military space, Sandboxx News brings you a wealth of information to stay up to date on the ever evolving world of military life. Covering news to lifestyle to military affairs, the Sandboxx Editorial team brings decades of real life experience and education straight to your phone.
GET EXCLUSIVE SANDBOXX PRODUCTS
Whether you want to purchase military apparel for yourself or set up a daily mail send for your recruit, the Sandboxx Shop stocks a wide variety of recruit and supporter centric products that are sure to delight your recruit's entire support system.
• OPSEC and PERSEC compliant
• Automatically connect with your service member to easily send letters
• Write your letter, add photos and gift card and send within minutes
• Track your letter from Sandboxx HQ to the base mailroom
• Access to customer support fully staffed by veterans and military spouses
No Federal or DoD Endorsement Implied.
Sending letters to basic training and beyond has never been easier. With over 8 million letters sent to date, we have revolutionized the way you think of supporting your service member. A fully digital letter writing experience, overnight shipping, tracking and the option to add gift cards makes Sandboxx the ultimate supporter tool.
With a growing community of over 2 million Sandboxx users, we are continuing to build more products to help. Get access to base specific training updates from within the app as your recruit progresses through basic training. Refer friends and family to earn free Letters and ensure your service member can receive even more mail.
Check out Sandboxx News to stay up to date with all that's going on in the military space. Grab some additional stamps, newsletters or motivation to mail your recruit in the Sandboxx Shop.
With Sandboxx, we've got you covered for all your basic training needs.
SEND LETTERS TO BASIC TRAINING AND BEYOND
The easiest way to send letters to basic training or overseas. Send a letter, anytime, anywhere. We physically print your mail, include return stationery, provide tracking and overnight it to your recruit at any recruiting base.
GET WEEKLY TRAINING UPDATES
Stay up to date on your recruit as they progress through basic training. Learn about what they are going through on a weekly basis, all accessible within the Sandboxx app.
LEARN MORE WITH SANDBOXX NEWS
Your essential source of news from within the military space, Sandboxx News brings you a wealth of information to stay up to date on the ever evolving world of military life. Covering news to lifestyle to military affairs, the Sandboxx Editorial team brings decades of real life experience and education straight to your phone.
GET EXCLUSIVE SANDBOXX PRODUCTS
Whether you want to purchase military apparel for yourself or set up a daily mail send for your recruit, the Sandboxx Shop stocks a wide variety of recruit and supporter centric products that are sure to delight your recruit's entire support system.
• OPSEC and PERSEC compliant
• Automatically connect with your service member to easily send letters
• Write your letter, add photos and gift card and send within minutes
• Track your letter from Sandboxx HQ to the base mailroom
• Access to customer support fully staffed by veterans and military spouses
No Federal or DoD Endorsement Implied.
Sandboxx 20.31.0 Update
We update Sandboxx frequently to support you throughout your military journey.- Improved support squad experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
Read More
Sandboxx Features
Related Videos
How To Send Letters To Basic Training
Previous Versions
More
Variant
Arch
Version
DPI
572
March 20, 2026
Sandboxx
20.31.0
(572)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 2f020b4684dc101950793bfbb07763d99605829e
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.arm64_v8a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxhdpi, config.zh
Size: 43.02 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Improved support squad experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Improved support squad experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
arm64-v8a
Android 8.0+
nodpi
572
March 20, 2026
Sandboxx
20.31.0
(572)
Requires Android: Android 8.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 3abec62a3dcd33afcb4d8d48a4e7210f0f403b74
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.armeabi_v7a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.mdpi, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.zh
Size: 75.48 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Improved support squad experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Improved support squad experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
armeabi-v7a
Android 8.0+
nodpi
Variant
Arch
Version
DPI
571
March 3, 2026
Sandboxx
20.30.0
(571)
Requires Android: Android 8.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 5cc95240ac7f724800d83d3b7b31bfabff2d14ab
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.armeabi_v7a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.mdpi, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.zh
Size: 71.19 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Recipient Phone Numbers
- Support Squad Invites Redesign
- Referrals Screen Redesign
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Recipient Phone Numbers
- Support Squad Invites Redesign
- Referrals Screen Redesign
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
armeabi-v7a
Android 8.0+
nodpi
571
March 3, 2026
Sandboxx
20.30.0
(571)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 80ffce6885aaed7e8dc0cad2106a757526ea2820
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.arm64_v8a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xxhdpi, config.zh
Size: 40.84 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Recipient Phone Numbers
- Support Squad Invites Redesign
- Referrals Screen Redesign
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Recipient Phone Numbers
- Support Squad Invites Redesign
- Referrals Screen Redesign
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
arm64-v8a
Android 8.0+
nodpi
Variant
Arch
Version
DPI
568
February 10, 2026
Sandboxx
20.29.0
(568)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: f814ddd4511ddd017ee63722509e153ef9888247
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.arm64_v8a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xhdpi, config.zh
Size: 40.39 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Updated auto save behavior while authoring letters.
- Refined Muster dashboard experience.
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Updated auto save behavior while authoring letters.
- Refined Muster dashboard experience.
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
arm64-v8a
Android 8.0+
nodpi
568
February 10, 2026
Sandboxx
20.29.0
(568)
Requires Android: Android 8.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 6f33ef276f33b5073508b8ae332c1c311a2bce48
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.armeabi_v7a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.mdpi, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.zh
Size: 69.69 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Updated auto save behavior while authoring letters.
- Refined Muster dashboard experience.
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Updated auto save behavior while authoring letters.
- Refined Muster dashboard experience.
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
armeabi-v7a
Android 8.0+
nodpi
Variant
Arch
Version
DPI
567
February 7, 2026
Sandboxx
20.28.0
(567)
Requires Android: Android 8.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 8e72a8bc814f34c69a2ef9fb21afce19c8dc793f
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.armeabi_v7a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.mdpi, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.zh
Size: 69.73 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Updated community tab experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Updated community tab experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
armeabi-v7a
Android 8.0+
nodpi
567
February 7, 2026
Sandboxx
20.28.0
(567)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 6b645528044f3ab60a303f93a731701b57264b3a
Base APK: com.sandboxx.android.apk
Split APKs: config.ar, config.arm64_v8a, config.de, config.en, config.es, config.fr, config.hi, config.in, config.it, config.ja, config.ko, config.my, config.pt, config.ru, config.th, config.tr, config.vi, config.xhdpi, config.zh
Size: 40.4 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey.
- Updated community tab experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Updated community tab experience
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
arm64-v8a
Android 8.0+
nodpi
More Information
Package Name:
Update Date:
2026-03-20
Latest Version:
20.31.0
Need Update:
Available on:
Requirements:
Android 8.0+
Report:
Safe to Download
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