Export Thunderbird to Outlook

Two Ways to Migrate Thunderbird to Outlook: One Simple, One Free

If you need to process 20 user accounts or more, please visit our “Large-Scale Migration” page.

Converting your email from Thunderbird to Outlook? Unless you’ve found a converter you can trust, you’re faced with a challenge.

If you’ve tried converting your emails before, you already know how painful it can be. Thunderbird’s mbox files don’t convert easily to Outlook. When you try workarounds and free downloads, you get:

  • Messed-up folder structures
  • Incorrect message dates
  • Lost data
  • Missing email addresses, status flags and time stamps (due to lost SMTP headers)
  • Broken embedded images
  • And, in many cases, painstaking hours of manual folder reordering

​And here’s the worst of it: You know if you make the wrong decision, you could end up wasting hours of your precious time and still lose valuable email data.


How to Export the Simple Way

With Aid4Mail you only have to go through three simple steps to get your conversion done. And you’ll love the results:

  • No data is lost in conversion.
  • It automatically restores your mailbox folder tree in Outlook without any manual intervention.
  • It correctly transfers the status information of your emails (like unread, replied, forwarded, and flagged) to Outlook.
  • ​You can export directly to Microsoft Outlook, Office 365 or Exchange.​
Screenshot of Aid4Mail’s user-friendly wizard interface
Screenshot of Aid4Mail’s user-friendly wizard interface
Get Aid4Mail Now

Still Want to Convert the Free Way?

This method is a lot more complicated and time consuming. But it’s by far the best free solution on the Internet. It requires four programs: our free MBOX Converter, Windows Explorer, Windows Live Mail (WLM) and Office Outlook.


When You Value Your Time, Use Aid4Mail

​Watch our video demo to see how easy email migration will be.


Over 100,000 people have used Aid4Mail to quickly and easily migrate their mail.

“The conversion from Thunderbird to Outlook today went great! Once again Aid4Mail got the job done beautifully. I will continue to use and recommend your software…”
– Michelle Fenley, USA
“Totally awesome – have been wanting to get away from Tbird [Thunderbird] for months as it has gotten progressively unreliable – finally got to the "I gotta do something now!" point and your stuff worked like a charm.”
– Robert McCoy, USA
“Aid4Mail is a spectacular product. I don't think people realize how hard it is to reliably convert email from one format to another, and then do it at scale the way you do. It really is quite an accomplishment.”
– Matt Coan, Sonian          [ Read our Sonian Case Study ]

Ready to Buy Now? It’s Quick and Easy

A single Aid4Mail license can be used to process one person's mail in total on a single computer (and Windows login account), or from one computer to another. If you need to migrate mail stored on 3 different computers, or belonging to 3 different people, then you’ll need 3 Aid4Mail licenses. You can set the number of licenses on the next screen.

Aid4Mail Home
For Private Mail Only

  •  50% discount on renewal
     Can be used for email archiving
  •  Free support (within 48 hours)
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Be sure to install Outlook before you begin migration.
Double-check the system requirements here…

  • Operating System : Aid4Mail runs under Windows 10, 8, 7, Vista, XP, 2000, Server 2016, 2012, 2008 and 2003 or Linux in conjunction with Wine. Both Windows 32-bit and 64-bit are supported.
    Windows NT4 / ME / 98 / 95 should work but are not officially supported.
  • Internet : Online license activation, validation, and re-activation require an internet connection (offline activation option available with Aid4Mail eDiscovery editions).
  • Hardware Requirements : 64 MB of RAM, 12 MB disk space. Pentium (or compatible) processor.

IF YOU’LL BE PROCESSING OUTLOOK/EXCHANGE: Read more >

Aid4Mail can read mail from:

  • Microsoft Exchange through Outlook/MAPI (1) (except Aid4Mail Home) or IMAP (2),
  • Outlook Personal Storage files (1) (*.pst),
  • Outlook MSG files (1) (*.msg),
  • Outlook Express versions 5 and 6 (*.dbx, *.eml and *.nws),
  • Outlook Express version 4 (*.idx and *.mbx),
  • Windows Live Mail (*.eml;*.nws),
  • Windows Mail (Vista mail client),
  • IMAP accounts,
  • Webmail services that offer IMAP access, e.g. Gmail, Yahoo! Mail, AOL Mail, FastMail, GMX Mail, Outlook.com, Outlook 365, etc.,
  • Mozilla Thunderbird mailbox files,
  • SeaMonkey mailbox files,
  • Netscape mailbox files,
  • Apple Mail (Mail.app) message files (*.emlx),
  • Qualcomm Eudora mailbox files (*.toc and *.mbx),
  • Eudora OSE mailbox files,
  • Macintosh Eudora mailbox files,
  • Google Takeout files (*.mbox),
  • Google Vault files (*.mbox),
  • Generic mailbox files (mbox, Entourage MBOX, Evolution, Berkeley mail, BSD mail, Unix mail format),
  • EML message files (*.eml),
  • MHT Web Archive files (*.mht),
  • Pegasus mailbox files (*.pmi, *.pmm, and *.cnm),
  • The Bat! mailbox files (3) (*.msb and *.tbb),
  • PocoMail mailbox files (*.idx, *.idb, and *.mbx),
  • Barca mailbox files (*.idx, *.idb, and *.mbx),
  • FoxMail mailbox files up to version 6.5 (*.box),
  • Opera mailbox files (*.mbs),
  • Calypso and Courier archive files,
  • Forte Agent mailbox files (*.idx),
  • Pine mbox files (with limited “From ” escaping),
  • PMMail message files (*.msg),
  • Maildir folders (local copies),
  • MSN Mail v8 (*.MailDB),
  • Mailbag Assistant mailbox files (*.mbg),
  • E-mail Examiner mailbox files (*.pmx),
  • Aid4Mail ZIP archives (*.zip).

Aid4Mail can export/save mail to:

  • Microsoft Exchange through Outlook/MAPI (1) (except Aid4Mail Home) or IMAP (2),
  • Outlook Personal Storage files (1) (*.pst),
  • Outlook MSG files (1) (*.msg) – only if source mail comes from Microsoft Exchange or Outlook files,
  • Windows Live Mail,
  • Windows Mail (Vista mail client),
  • IMAP accounts,
  • Webmail services that offer IMAP access, e.g. Gmail, Yahoo! Mail, AOL Mail, FastMail, GMX Mail, Outlook.com, Outlook 365, etc,
  • Mozilla Thunderbird mailbox files,
  • SeaMonkey mailbox files,
  • Eudora OSE mailbox files,
  • Netscape mailbox files,
  • PocoMail mailbox files (*.mbx),
  • Barca mailbox files (*.mbx),
  • Generic mailbox files, (mbox, Entourage MBOX, Evolution, Berkeley mail, BSD mail, Unix mail format),
  • EML message files (*.eml),
  • XML files (*.xml),
  • Plain text files (*.txt),
  • MHT Web Archive files (*.mht) - linked from an HTML index page or an MS Excel Workbook file (not available in Aid4Mail Home),
  • MHT files with tab-delimited data file for import into a database (not available in Aid4Mail Home),
  • Adobe Acrobat PDF files (not available in Aid4Mail Home),
  • Aid4Mail ZIP archives (*.zip).

Notes:

  1. To process (from/to) Outlook MSG files, PST files, and Outlook/MAPI mail profiles, Aid4Mail requires either a 32-bit version of Office Outlook or a standalone version of MAPI. For details, free options, and limitations, see the System Requirements.
    Only Aid4Mail Console can export a source MAPI profile or PST file to a target MAPI profile or PST file. With Aid4Mail Home, Aid4Mail Professional, and Aid4Mail eDiscovery, the workaround is to first export your emails to the Outlook MSG format, and then re-export those files to your target format.
  2. Microsoft Exchange can either be processed through an Outlook/MAPI mail profile (1), or through the IMAP protocol in which case the Exchange server needs to be set up for IMAP access (see instructions).
  3. Aid4Mail cannot process encrypted The Bat! mail files. In this case, you will first have to export your messages with The Bat! to a Generic mailbox format, which Aid4Mail can then process to any of the supported formats.
  4. Aid4Mail currently does not offer tools to convert address books, filters, or account settings from one format to another.

Prefer to Try Before You Buy?

Go ahead, take it for a test run and see for yourself how easy it is to use. We want you to be confident that Aid4Mail is fully compatible with your computer and does what you need. Download the trial version of Aid4Mail now.