Sort by Received Header

To sort messages by the Received date for IMAP accounts you need to do the following:

  • Open the config editor.
  • Type "mailnews.customDBHeaders" into the "Filter:" textbox
  • Right click the entry and choose modify to append the value Received to the comma delimited list of extra headers to fetch from the IMAP server.
  • Restart Postbox
  • Rebuild the index for your INBOX.
  • Add the Received header to your message list pane by right clicking on a message list column and selecting the Received header.