Audience

Users that need a secure encrypted email app for iOS

About Letterbox

Who reads your mails? With regular mails you, the receiver, all mail providers and maybe others can read them. With end-to-end encrypted mails only the sender and the receivers can read them. Our iOS-App Letterbox makes end-to-end encryption easy to use, is compatible with most mail providers and supports the standard encryption protocol OpenPGP.

Letterbox is similar to common mail apps but indicates the security state of incoming and outgoing mails. We disinguish between a confidential and insecure mails.

Letterbox is a free open-source mail client on iOS and part of an ongoing research project at the Freie Universität Berlin, Germany. Letterbox is still under development but you can soon use the app on your device with Apple's TestFlight app.

Pricing

Starting Price:
Free
Pricing Details:
Open source
Free Version:
Free Version available.

Integrations

No integrations listed.

Ratings/Reviews

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Company Information

Letterbox
Germany
letterbox-app.org

Videos and Screen Captures

Letterbox Screenshot 1
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Product Details

Platforms Supported
iPhone
Training
Documentation
Support
Online

Letterbox Frequently Asked Questions

Q: What kinds of users and organization types does Letterbox work with?
Q: What languages does Letterbox support in their product?
Q: What kind of support options does Letterbox offer?
Q: Does Letterbox have a mobile app?
Q: What type of training does Letterbox provide?
Q: How much does Letterbox cost?

Letterbox Product Features