imapsync
MailStore
Gmvault
getmail6
OfflineIMAP
mnIMAPSync
FastMail
mbsync is a command line application which synchronizes mailboxes.

imapsync
IMAP Upload
MailStore
audriga Email and Groupware migration
CloudSponge
Layercode UseCSV
Cloudiway
ShuttleCloud is an API that allows developers to import address books from hundreds of email providers.
Which is more popular?
Based on our record, isync (mbsync) seems to be more popular. It has been mentioned 17 times since March 2021.
Website, pricing, platforms and company facts side by side.
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isync (mbsync)
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| Website | isync.sourceforge.io | shuttlecloud.com |
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What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
Walkthroughs and reviews on video.
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Prometheus Is Good for Your Small Startup by Ignacio P. Carretero, ShuttleCloud
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using isync (mbsync) and ShuttleCloud. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Instead of migrating from server to server — and remaining on computers I don’t own - I download locally which it looks this tool doesn’t do. I use mbsync/isync which is fast and reliable. https://isync.sourceforge.io/. - Source: Hacker News / over 1 year ago
There are also isync and OfflineIMAP which sync email locally. Source: over 3 years ago
I set up mbsync to mirror the current (last 90 days) of my Fastmail IMAP account into another local Maildir, and told Notmuch to index that as well. This ensures a Notmuch search will cover both current & archived messages. Source: over 3 years ago
Tracking ShuttleCloud since Mar 2021.
When comparing isync (mbsync) and ShuttleCloud, you can also consider the following products.

Console-based utility for migrating IMAP mailboxes.
Compare imapsync to isync (mbsync) or ShuttleCloud:

MailStore Home - A 100% free single-private-user desktop solution
Compare MailStore to isync (mbsync) or ShuttleCloud:

IMAP Upload is a tool for uploading a local mbox file to IMAP4 server.
Compare IMAP Upload to isync (mbsync) or ShuttleCloud:


Easily migrate your email, contacts, calendar items and tasks to your new provider or server. No software installation is required.
Compare audriga Email and Groupware migration to isync (mbsync) or ShuttleCloud: