Add "send to folder" button to Tool bar

[AArnison]

I have several folders are use to store my email, and every day I have to
drag new emails from my inbox to their relevant storage folder for storage.

Is there a way I can add a button to my toolbar which representents a
folder, so I can highlight mail to be moved to a particular folder, then push
the folder toolbar button to move the mail from the inbox to this folder?

It would work a bit like a junkmail button, but instead would move mail to
be kept into a certain folder. It would save a lot of darg and dropping!

Thanks

Andrew