CipherMail Email Encryption

CipherMail for Android is an application designed to enhance email security through S/MIME digitally signed and encrypted email. This app enables users to send and receive secure emails while utilizing their existing Android mail applications, such as Gmail or K9. Users can download CipherMail to ensure their communications are protected against unauthorized access.

The application supports S/MIME 3.1, which is based on X.509 certificates as specified in RFC 3280. This feature allows for both email encryption and digital signing, ensuring that the content of the email and its attachments remain confidential and can be verified for authenticity. By integrating with existing email clients, CipherMail streamlines the process of sending secure messages without requiring users to switch to a different email platform.

CipherMail automatically extracts certificates, which simplifies the process of managing the security credentials necessary for encrypted communication. The app is compatible with other S/MIME clients, including popular options like Outlook and Thunderbird. This interoperability enables users to communicate securely with contacts who may not be using the same email client.

The application offers support for clear signed messages, which can be verified by opening the message as an .eml file. This functionality is important for users who need to confirm the authenticity of a digitally signed message. However, it is noted that existing mail clients may not provide access to the complete message needed for validation, which could limit the ability to verify signatures effectively.

Users can benefit from the ability to encrypt both messages and attachments, providing an added layer of security. This is particularly relevant for businesses and individuals who deal with sensitive information and require assurance that their communications are protected. The app also supports HTML email, allowing users to maintain the formatting and design of their messages while ensuring they remain secure.

To further enhance security, CipherMail supports Certificate Revocation Lists (CRLs) via both LDAP and HTTP. This feature allows users to check the validity of certificates before using them for encryption. In addition, the app includes Certificate Trust Lists (CTLs) that enable users to manage which certificates are trusted or blocked. This capability is crucial for maintaining control over the security of communications and ensuring that only verified contacts are included.

For users who may not have access to a certificate authority, CipherMail provides an option to generate self-signed certificates for a private Public Key Infrastructure (PKI). This feature is beneficial for users who wish to maintain a higher degree of control over their email security without relying on third-party services.

The application requires access to contacts in order to facilitate recipient lookups when composing messages. If the Contacts permission is not granted, users can still use the app, but they will need to manually enter recipient information. This design allows for flexibility while ensuring that users can easily send secure emails.

When using CipherMail with Office 365, it is important to ensure that SMTP is enabled to facilitate email sending. This compatibility makes the app a versatile choice for users in corporate environments who rely on Microsoft services for their email communications.

The app effectively addresses the growing need for email security in an increasingly digital world. Its features are designed to provide users with the tools necessary to protect their sensitive communications without compromising usability. By offering integration with various email clients and support for industry standards, CipherMail stands out as a reliable option for secure email transmission.

To explore the capabilities of CipherMail for Android, users can easily download the app and begin enhancing their email security. With its comprehensive set of features designed specifically for protecting email communications, CipherMail proves to be a valuable tool for anyone serious about maintaining privacy in their digital correspondence.

For further details and support, users can visit the community forum or access the official documentation to better understand how to utilize the app effectively. The commitment to providing a secure email experience is evident in the design and functionality of CipherMail, making it a noteworthy choice for those prioritizing email security.

Documentation: https://www.ciphermail.com/documentation/ciphermail-for-android/index.html

Support: https://community.ciphermail.com/