Horcrux lets you automatically backup your mails from any IMAP supported email accounts with great ease. The best part is, you have an option to restore the backed up emails to any other email account, retaining all your tags/folder hierarchy.

"Horcrux is handy since you don't actually have to think about it when it's running" - Lifehacker

Note: This is a background app, it resides on the Mac menu bar called "H". Click on that to get back to the preferences.

- Tested with iCloud, Gmail, Google Apps, Microsoft Exchange, GMX, DomainFactory. It should work on most email accounts.
- Incremental backups
- Automated backups at multiple locations (server and local) using the Hooks functionality.
- Supports multiple email accounts
- Add the accounts, set the backup frequency and it'll unobtrusively backup emails in the background
- Native Email Browsing interface where you can undelete specific emails (in case of user error)
- Independent IMAP Server to Server migration utility
- Clever restore process that'll skip already existing emails
- Stores emails in open format (.eml) which can be opened in clients like Apple Mail
- Can export emails in open format as .mbox
- The backups can be offline and moved around to different computers.

Please feel free to contact us in case of any problems

Note: Google, Microsoft, GMX, DomainFactory are trademarks of their respective owners.

What's New

Version 4.1.16

- Fixes character set encoding issues. Thanks a lot, Werner for helping out!
- Faster Verification Mechanism.

Ratings and Reviews

Richard Hertz

Unexpected Crash with No Warning or Reason

Decided to purchase this software after reading various reviews of mail archiving software.

I’ve attempted to run it on one of my email accounts. It crashes after 10-20 minutes, the app closes and there are no logs or other way to determine what’s wrong.

This indicates this isn’t really “finished” software. I object to paying YOU to beta test YOUR software. I’ll be asking for a refund from Apple.


Huge memory leak with large accounts

There seems to be a huge memory leak in this version that has completely bogged my computer down anytime Horcrux does a backup. I’ve been waiting over a month for it to be fixed, but so far, nothing. I can’t recommend this app at all in its current state.

Developer Response

The newest version 4.1.11 should fix the memory leaks.


Made moving from one gmail account to another easy!

The independent IMAP server to server migration tool is all I have used so far, and I am SOLD!!! Excellent app!!! It was worth the price just to make that migration go smoothly and quickly. I am excited to actually try the backup functions too, but the price is worth the IMAP server to server migration capability.

I had read articles about using Thunderbird as a go between for moving from one account to another, but I had numerous time-out issues on large folders or folders with picture attachments. I struggled for days doing one migration. Then before doing another migration, I looked some more online and in the app store. I did not like the price of this app, but I liked the sound of an independent IMAP server to server migration. It pushed through and moved evrything beautifully and easily… no hiccups, no timeouts, NO PROBLEMSA AT ALL! After numerous headaches trying the Thunderbird move and dealing with all those issues, I was SUPER HAPPY with how easy Horcrux Email Backup made the email migration.



Suhas Sharma
7.7 MB
OS X 10.9 or later, 64-bit processor
English, German
Age Rating
Rated 4+
© Suhas Sharma


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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