If filters aren't flexible enough, or you find yourself performing the same search again and again, consider a search folder. Search folders are an advanced way of viewing your e-mail messages within Evolution. If you get a lot of mail or often forget where you put messages, search folders can help you keep things organized.A search folder is really a hybrid of all the other organizational tools: it looks like a folder, it acts like a search, and you set it up like a filter. In other words, a conventional folder actually contains messages, but a search folder is a view of messages that might be in several different folders. The messages it contains are determined on the fly using a set of criteria you choose in advance.As messages that meet the search folder criteria arrive or are deleted, Evolution automatically adjusts the search folder contents. When you delete a message, it is erased from the folder in which it actually exists, as well as any search folders that display it.The Unmatched Search Folder is the opposite of other search folders: it displays all messages that do not appear in other search folders.If you use remote e-mail storage like IMAP or Microsoft Exchange, and have created search folders to search through them, the Unmatched Search Folder also searches the remote folders. If you do not create any search folders that search remote mail stores, the Unmatched Search Folder does not search in them either.As an example of using folders, searches, and search folders, consider the following: To organize his mailbox, Jim sets up a search folder for e-mail from his friend and co-worker Anna. He has another search folder for messages that have novell.com in the address and Evolution in the subject line, so he can keep a record of what people from work send him about Evolution. If Anna sends him a message about anything other than Evolution, it only shows up in the Anna search folder. When Anna sends him mail about the user interface for Evolution, he can see the message both in the Anna search folder and in the Internal Evolution Discussion search folder.
