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I found this question but it is not about Mail, is just profile.

I want to migrate all my e-mail in Thunderbird and attachment from Windows 7 to my Thunderbird in my Ubuntu 14.04.

Exists a program for that? Or I have to use others ways?

Thanks very much.

  • What mail protocol do you use in your Windows Mail client to communicate with your mail server? – tomodachi Jul 8 '15 at 13:29
  • so I use POP and SMTP, is that? – Vitor Mazuco Jul 8 '15 at 13:31
  • does the server support the IMAP protocol? – tomodachi Jul 8 '15 at 13:38
  • yes, it support. – Vitor Mazuco Jul 8 '15 at 13:38
  • Are you using a Hotmail(outlook) account? or some other name@business.com account? – blade19899 Jul 8 '15 at 13:52
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Best is to Use IMAP if you insist on POP se the alternative at the bottom.

Since you are using the POP protocol in your mail client. Mails are most probably being downloaded to your email client and removed form the server (check your email client settings to verify this)

If you were running IMAP already you would only need to to Step NR 3

1) Set up IMAP on your old mail client. Disable checking of email with the POP account but do not remove it and re add another the same email account in your windows email client, but this time with IMAP support instead of POP support.

Since IMAP will not download and remove emails from the mail server ,but simply make an cached version of your emails in your email client. Allowing you to read delete and otherwise interact with your emails from multiple devies.

2) Move emails back to server

Once that is done , drag and drop all your emails from your pop3 inbox in your mail client into the IMAP inbox you should be having. This will basically re-upload the emails onto your e-mail providers server.

3) Configure IMAP on thunderbird.

Once all email have been moved back. You can simply configure your thunderbird on linux or any email client to gain access to your emails.

In general IMAP is always preferred over POP as it has better support for handling email when using multiple email clients in multiple locations.


If you insist on continuing using POP: Since the Thunderbird file format is the same between different operating systems you can actually extract the data file manually from the install folders.

But it might be easier just to install the import export add on , export the emails with it , move that file to the new place and import it with the same add on.

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  • ok, but I want to to use POP, aren't there others ways for I make the migration? – Vitor Mazuco Jul 8 '15 at 16:01
  • @VitorMazuco POP3 is seriously flawed and shouldn't be used unless you have some unique use case. But for completeness I've added it to the answer. – tomodachi Jul 12 '15 at 17:56
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If you can sync all your mails from your mail server, then you can simply configure thunderbird on ubuntu 14.04 and sync it.

In case you have mails stored locally on Windows (which are not available on mail server) then you have to copy the local archived folder from Windows and copy it to ubuntu. Thuderbird picks the mails from that.

For details instructions please follow this page.

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