How does your two level search work? will it work as a filter?
As you enter text in the search field, only the digests of letters that satisfy the conditions of your search are displayed, but only from the current folder. We call it search letter filtration in the current folder. To do a global search in all your letters, you need to click the search button after you have entered all the key words. Letters found in all your correspondence are put into a temporary virtual folder. Searching this folder, once again, will be limited only to the letters in this folder (before the search button is clicked, which will start the process from the beginning).Similar to the operations that cover all the messages, a search through all the messages requires loading all your messages onto the client device (only once per session). To search conveniently through a large number of messages, you should have a fast internet connection.
