I'd like to check whether I have unread mails, independent of the mail account, in Thunderbird/Icedove.
I went trough the parameters of Icedove, but couldn't find anything useful. The idea is to check ever x minutes, whether an unread mail is available or not, if so, I'll change an icon in my system bar, to notify me. I often don't notice the Icedove popups, or simply forget about them.