Gmail Search
Search
If you're worried that you won't be able to find a specific conversation after you move it from your inbox, search has got you covered. When you'd like to find a message, you can enter a word or phrase in the search field and click the Search Mail button. Your results will be displayed with your search terms highlighted in yellow.
If your search is a little complicated -- maybe you're trying to find a message from your Institution, about some work, and you remember that they sent it to you and your moderator. Just click Show search options. You can enter all of these criteria (and then some) to refine your results.