Letterbox TestFlight

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Letterbox:

About

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.
TestFlight:

About

Help developers test beta versions of their apps using the TestFlight app. Download TestFlight on the App Store for iPhone, iPad, and Apple TV. To test beta versions of apps using TestFlight, you’ll need to accept an email or public link invitation from the developer and have a device that you can use to test. Members of the developer’s team in App Store Connect can be added and will have access to all builds of the app. All other invited testers will have access to builds that the developer makes available to them. A developer can invite you to test with an email or a public link invitation. First, install the TestFlight app on the device you’ll use for testing. Then, accept your email or follow the public link invitation to install the beta app. You can install the beta app on up to 30 devices.
Letterbox:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported
TestFlight:

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Not Supported
Chromebook Not Supported
Letterbox:

Audience

Users that need a secure encrypted email app for iOS
TestFlight:

Audience

iOS app developers as well as iPhone, iPad, iPod Touch, and tvOS and Apple TV
Letterbox:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
TestFlight:

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported
Letterbox:

API

Offers API Not Supported
TestFlight:

API

Offers API Not Supported
Letterbox:

Screenshots and Videos

TestFlight:

Screenshots and Videos

Letterbox:

Pricing

Free
Open source
Free Version Supported
Free Trial Not Supported
TestFlight:

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported
Letterbox:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
TestFlight:

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software
Letterbox:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
TestFlight:

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported
Letterbox:

Company Information

Letterbox
Germany
letterbox-app.org
TestFlight:

Company Information

Apple
Founded: 1976
United States
testflight.apple.com
Letterbox:

Alternatives

Proton Mail

Proton Mail

Proton AG
4.6 out of 5 stars
TestFlight:

Alternatives

Letterbox:
TestFlight:
Letterbox:
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Letterbox:
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Letterbox:
TestFlight:
VibeView

VibeView

ScriptX
Letterbox:

Categories

Email Clients Supported
Email Encryption Supported
TestFlight:

Categories

TestFlight:

Mobile App Testing Features

Functional Testing Supported
Installation Testing Supported
Interruption Testing Supported
Memory Testing Supported
Performance Testing Supported
Usability Testing Supported
Letterbox:

Integrations

Antidote Not Supported
Blue Cedar Not Supported
CSM AI Not Supported
DexProtector Not Supported
Draftbit Not Supported
TestFi Not Supported
Wevr Virtual Studio Not Supported
Xcode Not Supported
TestFlight:

Integrations

Antidote Supported
Blue Cedar Supported
CSM AI Supported
DexProtector Supported
Draftbit Supported
TestFi Supported
Wevr Virtual Studio Supported
Xcode Supported
Letterbox:
Claim Letterbox and update features and information
Claim Letterbox and update features and information
TestFlight:
Claim TestFlight and update features and information
Claim TestFlight and update features and information