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What is Letterbox?

Who can access your emails? With traditional emails, you, the recipient, and all email service providers may have visibility into the contents, along with potential others. In contrast, end-to-end encryption restricts access solely to the sender and the intended recipients, ensuring greater privacy. The iOS app known as Letterbox enhances the end-to-end encryption experience, supporting a wide range of email services and employing the widely recognized OpenPGP encryption protocol. Although Letterbox operates like many other email applications, it specifically emphasizes the security status of both incoming and outgoing communications, empowering users to identify which emails are secure and which are not. Being a free and open-source email client for iOS, Letterbox aligns with an ongoing research project at Freie Universität Berlin. While it is still in development, users will soon have the chance to try the app on their devices via Apple's TestFlight platform, making secure communication increasingly available to the public. This development not only aims to improve user understanding of email security but also strives to maintain a seamless and intuitive user interface. As technology evolves, the importance of secure communication will only continue to grow.

What is Ciphermail Appliance?

Protecting communications through email encryption is essential, as the majority of emails are sent in unencrypted plain text, making their content vulnerable to anyone who has access to the data stream. This vulnerability poses significant risks for businesses, organizations, and institutions, potentially leading to violations of legal standards. To improve security and build trust in electronic communications, CipherMail functions as a central mail transfer agent (MTA) utilizing a “store and forward” system. It temporarily retains incoming messages from both internal and external sources until they are either encrypted or decrypted, allowing for smooth delivery to the recipient without altering the email client or interfering with any SMTP server. CipherMail supports various email encryption techniques, including S/MIME and PGP, and can even embed encryption within PDF files, with activation based on certain triggers like keywords in the email subject line. In addition, CipherMail features a Data Leak Prevention (DLP) module that offers an extra layer of security against unauthorized data leaks. This thorough approach to email security not only safeguards sensitive information but also bolsters the overall reliability of electronic communications across numerous platforms, ensuring that users can confidently share information without fear of interception. The combination of these advanced features positions CipherMail as a leader in the realm of email security solutions.

Media

Media

Integrations Supported

Keyfactor EJBCA

Integrations Supported

Keyfactor EJBCA

API Availability

Has API

API Availability

Has API

Pricing Information

Free
Free Trial Offered?
Free Version

Pricing Information

$670 one-time payment
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Letterbox

Company Location

Germany

Company Website

letterbox-app.org

Company Facts

Organization Name

in-put

Date Founded

1996

Company Location

Germany

Company Website

www.ciphermail.info

Categories and Features

Categories and Features

Email Security

Anti Spam
Anti Virus
Email Attachment Protection
Encryption
Policy Management
Quarantine
Reporting/Analytics
Whitelisting / Blacklisting

Secure Email Gateway

Anti-Malware
Archiving
Customizable
Data Loss Prevention
End-to-End Encryption
Real-time Dashboards
Reporting / Analytics
Sandbox
Threat Protection

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