These are a ready make selection of some of the most popular buttons from the Custom Toolbar Button Maker

Thunderbird, Postbox

Toggle Tasks

Toggle the task bar between visible and hidden.

Install Toggle Tasks

Download Toggle Tasks

Compatibility: Thunderbird, Postbox SeaMonkey

Tools Menu

Show the tools menu.

Install Tools Menu

Download Tools Menu

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Unread Threads

View threads that you have not read yet.

Install Unread Threads

Download Unread Threads

Compatibility: Thunderbird, Postbox SeaMonkey

View Menu

Show the view menu.

Install View Menu

Download View Menu

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Watched Threads with Unread

View watched threads that have unread messages in them.

Install Watched Threads with Unread

Download Watched Threads with Unread

Compatibility: Thunderbird, Postbox SeaMonkey

Work Offline

Toggle Work Offline and Work Online.

Install Work Offline

Download Work Offline

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Zoom Text Only

Toggle between text and page zoom.

Install Zoom Text Only

Download Zoom Text Only

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey