outMail vs Sympa

outMail

Office & Productivity

outMail is an open-source email client focused on security, privacy and control. It supports PGP encryption, has a clean and intuitive interface, and gives users fine-grained control over all aspects of email.

Sympa

Social & Communications

Sympa is an open source email list management web application. It allows you to create and manage mailing lists for distributing messages to large numbers of email subscribers. Key features include subscriber management, mailing list administration, message archiving and integration with external databases.