引用レベルによって色を変える＆すべての IMAP フォルダの新着メールを確認する

Vistaではこの和訳（http://www.mozilla-japan.org/support/thunderbird/tips.html）は古いので英語版の本家を見に行った．

引用レベルによって色を変える

Use different Quote Level Colors

This tip is very useful because it adds different colors of both the text and background of different quote levels in messages. This makes it much easier to follow a long discussion in newsgroups for example, where the level of reply quotes can go very deep.
Of course, you can customize the colors in the code below to your own liking. Add the following code to your userContent.css file:
    /* Quote Levels Colors */
    	blockquote[type=cite] {
    	   color: navy !important; background-color: RGB(245,245,245) !important; 
    	}
    	blockquote[type=cite] blockquote {
    	   color: maroon !important; background-color: RGB(235,235,235) !important;
    	}
    	blockquote[type=cite] blockquote blockquote {
    	   color: green !important; background-color: RGB(225,225,225) !important;
    	}
    	blockquote[type=cite] blockquote blockquote blockquote {
    	   color: purple !important; background-color: RGB(215,215,215) !important;
    	}
    	blockquote[type=cite] blockquote blockquote blockquote blockquote {
    	   color: teal !important; background-color: RGB(205,205,205) !important;
    	}
Thunderbird Help

C:\Users\\AppData\Roaming\Thunderbird\Profiles\XXXXXXXXXXXXX.default\chrome\userContent.css を作って上のものを追加する．

すべての IMAP フォルダの新着メールを確認する

Check all IMAP folders for new mail

Thunderbird can download mail from all accounts when you start the program. Just open the Config Editor, search for the preference mail.check_all_imap_folders_for_new, and change its value to true.

Thunderbird Help

こっちはコンフィグエディタから設定できるので簡単．

Config Editor

Many of the tips and tricks mentioned on this site can be applied by using the built-in Config Editor. To access the Config Editor, go to Tools > Options... (Thunderbird > Preferences... on Mac OS X, and Edit > Preferences... on Linux), select the Advanced options panel, click on the General tab, and click on Config Editor. This will display a list of used preferences, as well as a search bar at the top.
Double-click on a preference to change its value. To do add a new preference, open the context menu (right-click) on any existing preference, go to the New menu, and select the type of preference.