Thunderbird 3: Autohide the Tab Bar When There’s Only One Tab
Posted by Rob Rogers in Internet
By default, Thunderbird displays the tab bar regardless of how many tabs are actually present. By hiding the tab bar when there’s only a single tab, you get a little more real estate displayed on your screen.
1. Go to Preferences.
2. Select the Advanced tab.

3. Click the Config Editor button.

4. Click through the warning.

5. Scroll down to mail.tabs.autoHide and double-click it to toggle the value to true.
6. Close the about:config window.
Your Thunderbird will go from looking like this:

to this:

The tab bar will become visible once there are more than one tab present.

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February 20, 2010 at 4:01 am, Crunch said:
Why do we need tabs for an e-mail client? I understand it’s mozilla but…
November 30, 2010 at 11:06 pm, IBMGuest said:
Lotus Notes 8.x Uses tabs