Translations:Kmail/Using Folders/7/en

From KDE UserBase Wiki

You can create a virtual folder with search parameters by going to either Edit → Find Messages..., Tools → Find Messages..., or Keyboard shortcut S. Enter your search parameters into the dialog. Name your search at the bottom Search folder name: textbox, e.g. emails with the word Blog. Click the Search button. Now select the Open Search Folder button. Your results folder will be at the bottom of the Folder pane.