The Apache Java Enterprise Mail Server (a.k.a. Apache James) is a 100% pure Java SMTP and POP3 Mail server, NNTP News and JMAP server. James is a complete and portable enterprise mail engine solution based on currently available open protocols.
James is also a mail application platform. We have
... [More] developed a Java API to let you write Java code to process emails that we call the mailet API. A mailet can generate an automatic reply, update a database, prevent spam, build a message archive, or whatever you can imagine. A matcher determines whether your mailet should process an email in the server. The James project hosts the Mailet API, and James provides an implementation of this mail application platform API. [Less]
Fast and scalable email services based on storage of messages in a database.
Robust support for IMAP4r1, POP3, LMTP, MANAGESIEVE.
Fully normalised decomposition of messages into headers and mimeparts.
Mimeparts are stored in a single-instance paradigm, preventing unnecessary duplication.
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Also supports a scalable connection pool to limit the database connection load under high concurrencies. [Less]
Archiveopteryx is a mail server system optimised for long-term storage and heavy access. It comprises a set of server programs that provide access to mail stored in a relational database (PostgreSQL). It runs on Linux, FreeBSD, NetBSD, OpenBSD and Mac OS X.
Stalwart smtp-proto is a fast SMTP/LMTP parser for Rust that supports all registered SMTP service extensions. The library is part of Stalwart SMTP and LMTP servers. It is not yet documented so if you need help using the library please start a discussion.
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