arrange icons on tool bar

Kyreeone wrote:

I can't re-arrange the icons on my mail toolbar. Search is hidden and selecting it does not make it work. Nothing happens. On my old Pro, the search bar was at the top but now its hidden. Help!

Customize toolbars on Mac - Apple Support

Change Viewing preferences in Mail on Mac - Apple Support

Mail User Guide for Mac - Apple Support

Try Mail Menu > View > Customise toolbar, and drag the default into it.