go-imap-sync

Library and command-line tool to sync the contents of an IMAP folder to disk, using https://github.com/emersion/go-imap.

What does it do?

imapsync downloads all emails from an IMAP mailbox, each email into a plain text file. The names of the files are derived from the email message ID. This enables imapsync to avoid downloading emails twice.

Usage from the Command Line

go get github.com/JohannesEbke/go-imap-sync/cmd/go-imap-sync
go-imap-sync -server mail.example.com:993 -username me -mailbox INBOX

You will be prompted for your password. If you use the program in scripts, you can also set the IMAP_PASSWORD environment variable.

Usage as a Library

err := imapsync.Sync("mail.example.com:993", "me", "hunter2", "INBOX", "/home/me/mails")

Why?

I've encountered the problem of acquiring incoming email from IMAP now in two different projects, https://github.com/martinhoefling/go-dmarc-report and https://github.com/TNG/openpgp-validation-server, and decided to factor out the common parts.

Roadmap

One possible additional mode of operation is to continuously monitor an IMAP mailbox, download new mails as they appear and notify the caller of the new emails, e.g. via a channel.