I guess this is a feature request, but maybe there's a way to do it?

I would like to have a "move message to..." icon in the toolbar of the Message Window. So, after reading a message I can file it directly without going back to the main window.

I tried Settings -> Configure Toolbars in the Message Window, but "move message to..." is not an available action. Is it possible to add it?

Thanks for any response or suggestions!

Kmail 4.14.2 using KDE Development Platform 4.14.2 under Linux Mint 17.3 Rosa.

I don't see the option either in my KF5 based KMail. The best action would be to file a wishlist request on bugs.kde.org.