Every time I get a new message in my inbox I have to click it before it gets downloaded. My internet connection is slow, so I have to wait for 20-30 seconds before I can read it. Then I click the next one, etc. Checking email takes a long time. I'd love for Thunderbird to download messages for me automatically as soon as they arrive. How can I achieve this? I am on 102.11.2 Already tried various settings with no success. 1) Under Account Settings > Synchronization & Storage > Message Synchronizing the checkbox "Keep messages in all folders..." is checked. 2) I set "mail.imap.mime_parts_on_demand" to false. These things did not help.