Exporting to Thunderbird
Is a migration process required?
A key question is whether you need to manually migrate anything at all. Please note the following:
- If your account is using IMAP, then you shouldn't need to migrate since Thunderbird will download all of your folders and mail for you.
- If your account is using POP or POP3, then Thunderbird can download messages from your Inbox. Messages in other folders will need to be manually migrated to Thunderbird.
- Messages stored on your local machine will need to be manually migrated to Thunderbird.
Exporting email from Postbox to Thunderbird
- Within Postbox, compact your folders by selecting Compact Folders from the File menu. If your mailboxes are quite large, this could take several minutes. Quit Postbox.
- As a precaution, backup Thunderbird by making a copy of your profile directory. Information on how to do this can be found within this article. Be sure to make a backup of your Postbox profile as well.
- Find the mail folders you would like to copy from Postbox. On the Mac, they are located at: [your home folder]/Library/Application Support/Postbox/Profiles/[your profile]/ and on Windows at: C:\Documents and Settings\[Windows user name]\Application Data\Postbox\Profiles\[your profile].
- Mail is contained in the following folders: Mail (for POP mail and Local Folders) and ImapMail (for IMAP mail).
- Copy the contents of your Postbox ImapMail folder to your Thunderbird ImapMail folder located on the Mac at: [your home folder]/Library/Thunderbird/Profiles/[your profile]/, and on Windows at: C:\Documents and Settings\[Windows user name]\Application Data\Thunderbird\Profiles\[your profile].
- Repeat this process for Mail/Local Folders, and Mail.
- Start Thunderbird.
For more migration options, please see this article.