I'm using Thunderbird with a lot of mail accounts. These accounts belong to different domains (i.e. gmail, hotmail, my own domain, etc.).
It would be a great help in organizing things, if I could group several accounts together. This could be all Hotmail-accounts or all gmail-accounts. This 'per domain'-way could be an automatic function. But the solution I would like is where I could drag an account to a group. A group should typically be written in capitals and maybe in a distinctive color.