[Users] locked emails backup tips?

[Frank Murphy]

I tend to lock import email,
so not to delete it by accident.

In Thunar (file-manager:Xfce)
I can see and open the locked\unlocked mail.
~/Mail/*

But what I cannot come up with is a script
to only backup the locked ones.
There appears to be no difference on the surface.

Any thoughts welcome.

-- 
Regards,
Frank - I check for new mail app. 20min
www.frankly3d.com