Mailpile - A free & open modern, fast email client with user-friendly encryption and privacy features

•    Python

Mailpile (https://www.mailpile.is/) is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license. Mailpile places great emphasis on providing a clean, elegant user interface and pleasant user experience. In particular, Mailpile aims to make it easy and convenient to receive and send PGP encrypted or signed e-mail.

Hastymail - IMAP/SMTP client in PHP

•    PHP

Hastymail is a fast, secure, rfc-compliant, cross-platform IMAP/SMTP client application written in PHP providing a clean web interface for sending and reading E-mail. It is compatible with PDAs, phones, text browsers, and all mainstream browsers. The ability to use a database for storing user settings, contacts, and plugin data, with support for both Postgresql and Mysql.

atarashii_imap - 新しい IMAP client in Rust

•    Rust

新しい (atarashii/new) IMAP client in Rust. It supports plain and secure connections.It's under development...

NioImapClient - High performance, async IMAP client implementation

•    Java

This client is well tested and heavily used at HubSpot, but it is still under active development and its public API is not guaranteed to be stable.

rust-imap - IMAP client for Rust

•    Rust

IMAP client bindings for Rust. Here is a basic example of using the client. See the examples/ directory for more examples.

webmail - A golang webmail server.

•    Go

All perform well, though in all honesty my own server performs the worst because I have ~1000 mailboxes. So just getting the folder list takes some time I'd rather avoid. NOTE: If you want to us IMAP (143) use imap:// as a prefix, if you want IMAPS (993) use imaps://. To avoid issues I'm NOT validating the SSL certificate. This is intentional. Sorry.

imap-proto - IMAP protocol parser and datastructures in Rust

The code for imap-proto now lives in the tokio-imap repository. This repository is kept around for now to preserve the issues filed here.

dmarc-report-processor - Scripts to pull DMARC reports from your mailbox (imap client) and convert it to Splunk friendly CSV format

•    Python

Script to pull DMARC records, process and pass it to splunk. imap-client.py - Pull attachments from mail imap server and store it in the given directory. This is a generic program that can be used to fetch emails and/or attachments using IMAP protocol.

mailbot - Mail Bot: IMAP client sorting entering emails and triggering operations of your choice

•    Javascript

This module will help you build an imap bot reacting to incoming emails. There are actually no test because I found a bit too time-consuming to mock an Imap server for testing. They will come later.