OfflineIMAP

OfflineIMAP: Synchronize Email Across Devices

A free and open source tool to access your email offline, syncing between a local mailbox and a server mailbox for seamless synchronization.

What is OfflineIMAP?

OfflineIMAP is an open source application that synchronizes email between two repositories, allowing users to access a local mailbox offline while still syncing it with the server-based mailbox.

It works by mirroring the remote IMAP server mailbox contents to the local Maildir mailbox, so when connectivity is restored, both mailboxes are synced bidirectionally. This allows an email client like Thunderbird to be used offline, while still syncing message statuses, flags, labels, etc. back to the IMAP server when connections are re-established.

Some key features of OfflineIMAP include:

• Bidirectional synchronization between IMAP Server and Maildir mailboxes
• Keeps remote and local mailboxes in sync by detecting changes on both sides
• Syncs message statuses, flags, labels, etc. not just message content
• Can handle large mailboxes and many folders efficiently
• Open source software written in Python

Overall, OfflineIMAP transparently handles mailbox sync so users can work with email offline without losing features that require a live IMAP connection. It's well-suited for mobile device usage or environments with intermittent network connectivity.

OfflineIMAP Features

Official Links