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Copying old email messages to the IMAP server using Thunderbird

To copy email to the IMAP server, you must first configure Thunderbird to read mail from the new server. Click here for step-by-step instructions on how to configure supported email clients (including Thunderbird) to read mail from the new server.

  • Once both accounts are configured, you must manually create the folder structure on the IMAP server. Folders cannot be moved from the local store to the IMAP server. However, once the folders have been created on the IMAP server, you can select all messages from the local folder and move them to the IMAP folder.
  • To move messages to the IMAP server, simply drag and drop them to the desired folder. (To copy the messages, use the "copy" command in the edit menu, then select the new folder and select "paste" from the same menu.) Remember, the Inbox is the root folder on IMAP - all folders must be created within it.
Note: You may see an error message displayed when moving a message stating the header and body of the message are not seperated correctly. You can ignore this message, but it may stop the transfer process before it has completed. In this case, you may simply go back and drag the remaining unmoved messages to the new server.

Note: Be careful not to transfer too many emails at one time. More than ~600 emails may cause the client to freeze.