Virtual mode gives you a single view for matching messages from multiple folders. Press `V' in Summary mode to enter Virtual mode.
First you are asked a name of virtual folder
Virtual folder name (virtual) :
Input an appropriate string. If you type just `RET', "++virtual" is selected. Then you are asked to input a single or multiple folder name. If you want to specify multiple folders, please separate them with ",". Of course, you can complete folder names with `TAB'.
Folder name (+inbox) : +inbox, +mew
Now input conditions.
pick pattern:
OK. You get a Virtual mode. In Virtual mode, you can use same commands that you can find in Summary mode except refile, delete, pick and etc. You should take note that Virtual folder is really virtual and it does not exist in file system. If you exit Mew, it then disappears.