Apache James

What it does

Administration

Administration options include JMX, REST, and command line.checked 5 Oct 2026

Community

The project describes itself as an open source, all volunteer project and invites users and developers to join its community.checked 5 Oct 2026

Customization

Users can assemble components and customize email filtering and routing with the Mailet Container.checked 5 Oct 2026

Java runtime

The site says James is built with Java 11 and runs on Java RE 11.checked 5 Oct 2026

License

The project states that contributions are made under the Apache License 2.0.checked 5 Oct 2026

Product

Apache James is a modular mail server running on the JVM.checked 5 Oct 2026

Protocols

Supported email protocols listed include SMTP, LMTP, POP3, IMAP, ManageSieve, and JMAP.checked 5 Oct 2026

Scale

The distributed server uses Cassandra, OpenSearch, RabbitMQ, and an S3 API and is intended for large scale deployments where scalability is required.checked 5 Oct 2026

Security

The download page instructs users to verify downloaded files using signatures and provides SHA-512 and PGP links for server binaries.checked 5 Oct 2026

Storage

Listed storage implementations include Cassandra, PostgreSQL, HSQLDB, MySQL, and OpenSearch.checked 5 Oct 2026

Support

The project lists companies offering professional support, including consultancy, feature development, and project integration.checked 5 Oct 2026

Target use

The roadmap identifies a distributed horizontally scalable mail server and a standalone single server version as goals.checked 5 Oct 2026