The Vomit project strives to provide a suite of tools for efficiently working with email. Currently, this means tools for the command line, but graphical tools are not out of scope. Vomit aims at use cases beyond reading and writing. In fact, Vomit currently doesn't provide anything to read or write mail, though that may change at some point.
Based on these opinions, the Vomit project explores the following approach:
Vomit wants mail stored in Maildir++ format. An email is a file. Enough said.
And yes, that means you can use some of the tools right on your mailserver, if that's your type of thing.
Vomit likes composability. It aims to supply various small tools (some merged in one executable) to work with your mail. But another goal is to make your mail accessible to other tools - e.g. by printing emails or an attachment to stdout. See the vmt README for some other examples.
Vomit intends to supply all the tools you need to get started. But if you
prefer to use other tools, that's cool. Want to use mbsync instead of
vsync? Cool. Your MUA already stores mail in Maildir++? Excellent. Vomit
hopes to provide options without forcing anything onto you.
Some tools may feel familiar, others not so much. Currently, there are:
Currently "the" Vomit tool, a sort of swiss army knife for email. It allows for
various interactions with your email, some interactive, others suitable for
scripting. See its README for lots of details. Includes the functionality of
vsync as subcommand.
A library (vomit-sync) and tool for IMAP-to-maildir synchronization. This stand-alone version is intended to be an alternative to isync/mbsync, offline-imap, and friends.
Please send patches to the vomit mailing list.
The mailing list is open for all kinds of feedback, questions, and discussions.