re :IMAP sent mail and draft not stored on imap server folders Have you subscribed to see those folders ? Right clickon imap mail account in Folder pane and click on 'Subscribe' select folders and click on 'Subscribe' click on OK Then check you have correct settings. Right clickon imap mail account in Folder pane and click on 'Settings' Select 'Copies & folders' 'Select 'Place a copy in' Select 'Other' and choose the subscribed Sent folder on account Under Drafts and Templates Keep drafts messages in: Select 'Other' and choose the subscribed 'Drafts' folder on account click on OK Restart Thunderbird.