A little OT - I'm trying to move from Sylpheed as an email client to Thunderbird. I want a client that I can keep consistent between different OS's and Sylpheed's Windows port seems to have died, plus last week it trashed my address book somehow. Great email client, some excellent threading capabilities, but time to move on. I've tried to find answers to these questions on google, but I'm not having any luck. Does anyone know if the following is possible with Thunderbird, maybe with an extention: 1.) I have a lot of IMAP folders, everytime I open a new folder I have to change the sort order (by date DESC) and turn on threading. Is there a way to change the global default sorting / threading behavior so I don't have to do it for every folder? 2.) Sylpheed had a nice log window where you could see the IMAP/POP/SMTP commands that were sent - I don't see anything similar in Thunderbird. Did I miss it? 3.) Is there a way to customize the short list of headers to include the sender's mail client? 4.) In the advanced options, any idea what mail.strict_threading does? It's set to False by default. Thanks, Josh