Sandboxx
8.0 1K+
v20.40.0 by Sandboxx, Inc.
About Sandboxx
Sandboxx (Package Name: com.sandboxx.android) is developed by Sandboxx, Inc. and the latest version of Sandboxx 20.40.0 was updated on July 22, 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 20.40.0 Update
We update Sandboxx frequently to support you throughout your military journey. This release includes:- Letter preview in authoring flow
- Fix support squad letter sharing
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
600
July 22, 2026
Sandboxx
20.40.0
(600)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: aeb9a76aaad1d3c702b76b27568985be52db3424
Base APK: com.sandboxx.android.apk
Split APKs: config.arm64_v8a, config.en, config.xhdpi
Size: 47.19 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- Letter preview in authoring flow
- Fix support squad letter sharing
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Letter preview in authoring flow
- Fix support squad letter sharing
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
600
July 22, 2026
Sandboxx
20.40.0
(600)
Requires Android: Android 10.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 69c6794111c53aed6c9b2e7329dfc0f7e5e979d7
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: 75.4 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- Letter preview in authoring flow
- Fix support squad letter sharing
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Letter preview in authoring flow
- Fix support squad letter sharing
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 10.0+
nodpi
Architecture: x86
Screen DPI: nodpi
SHA1: 3950790026685c2d48447a18fb61ec91b553b210
Size: 72.72 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- Login stability fixes
- AI assisted letter authoring
- Lots of other small bug fixes and UI improvements
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- Login stability fixes
- AI assisted letter authoring
- Lots of other small bug fixes and UI improvements
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
Variant
Arch
Version
DPI
594
July 6, 2026
Sandboxx
20.38.0
(594)
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 0dc6b647cf151faa776267141fe7965910cbd654
Base APK: com.sandboxx.android.apk
Split APKs: config.arm64_v8a, config.en, config.mdpi
Size: 70.95 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- General bug fixes and maintenance
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- General bug fixes and maintenance
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
nodpi
594
July 7, 2026
Sandboxx
20.38.0
(594)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: 67e17f117e011089e665be74c9c4919563d8ce35
Base APK: com.sandboxx.android.apk
Split APKs: config.arm64_v8a, config.en, config.xhdpi
Size: 46.58 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- General bug fixes and maintenance
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- General bug fixes and maintenance
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
594
July 7, 2026
Sandboxx
20.38.0
(594)
Requires Android: Android 10.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 8ab2eee62461131089f32014b2f57f60f9a155de
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: 73.57 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- General bug fixes and maintenance
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- General bug fixes and maintenance
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 10.0+
nodpi
Variant
Arch
Version
DPI
593
June 18, 2026
Sandboxx
20.37.0
(593)
Requires Android: Android 10.0+
Architecture: armeabi-v7a
Screen DPI: nodpi
SHA1: 30bee190fce2d1c7d43fa8810e21008aa6f88e5d
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: 73.3 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- User interface modernization
- General bug fixes and maintenance
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- User interface modernization
- General bug fixes and maintenance
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 10.0+
nodpi
593
June 23, 2026
Sandboxx
20.37.0
(593)
Requires Android: Android 8.0+
Architecture: arm64-v8a
Screen DPI: nodpi
SHA1: eb5d543a579de5399c8d8911c4241c31211ad9ef
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: 49.03 MB
What's New:
We update Sandboxx frequently to support you throughout your military journey. This release includes:
- User interface modernization
- General bug fixes and maintenance
Love the app? Rate us! Have a question or need help? Email us at happiness@sandboxx.us, we'd love to hear from you.
- User interface modernization
- General bug fixes and maintenance
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:
2026-07-22
Latest Version:
20.40.0
Need Update:
Available on:
Requirements:
Android 8.0+
Report:
Safe to Download
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