SOLUTION: As Hotmail is a POP3 account, not IMAP, following these steps is the simplest way. You need to: * Create a 'Temp' folder in Hotmail * Select all your messages in your Hotmail Inbox and move them to a new 'Temp' folder * Create a 'Temp' folder in Thunderbird * Select all your messages in your TB Inbox and move them to a new 'Temp' folder * Say you want to copy all your messages from your 'Finance' sub folder from Hotmail to Thunderbird. For each of the messages you have in 'Finance' sub-folder, move all these messages to your Inbox * Go to Thunderbird and refresh - this will bring all of Hotmail's Inbox through to TB (they're actually the Finance folder messages now) * Create a new 'Finance' folder in Thunderbird * Move all of the messages in your TB inbox to the new 'Finance' folder * Go back to Hotmail and follow the same process for each sub folder, copying all the messages in each sub folder one by one to your Inbox, then into TB. * Done!
