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

Thunderbird, Postbox

Undo

Undo Last Change

Undo last change/action.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Find

Find Text

Open the find bar to find a word in the current page.

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

Profile

View your profile folder

View your profile folder to find files (such as you bookmarks) to back them up.

Finding your profile folder can be a slow and annoying process. So this button does it for you in a flash, no more digging though all your folders.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Redo

Redo Last Change

Redo the late change.

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

Zoom Out

Reduce Text Size

Reduce the text size so it is not so big.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Free Memory

Free Unused Memory

Free unused memory that Firefox is currently using.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Change Text Direction

Change the text direction from left to right or right to left

Change the text direction from left to right or right to left.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey

Get Extensions

Get more Thunderbird extensions

Open addons.mozilla.org on the page to get more Thunderbird extensions. Link can be change using about:config if you prefer another site.

Compatibility: Pale Moon Thunderbird, Postbox SeaMonkey