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

Thunderbird, Postbox

Toggle Toolbar

Toggle the Main Toolbar

Toggle the main toolbar from showing to hidden. Don't place it on the main toolbar, it is disabled then and will not work.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Zoom In

Enlarge Text Size

Enlarge the text size on sites that makes the text so small you can't read it.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Zoom Text Only

Toggle between text and page zoom.

Toggle between text and page zoom.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

About

About

Open the about window. Useful for checking exactly what version you have installed.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Account Settings

Open account settings

Open Account Settings in Thunderbird.

Compatibility: Thunderbird, Postbox SeaMonkey

File Menu

Show the file menu

Show the file menu.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Page Setup

Setup how the page is printed

Define margins, orientation, and set up how the page is printed.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Paste

Paste

Paste text.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Cookie Exceptions

Open the Cookie Exceptions dialog

Open the cookie exceptions dialog.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Cookie Manager

Opens the cookie manager for the current web page.

Opens the cookie manager for the current web page. On middle click opens in a new tab.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey