android (or whatever else client, e.g. k9mail) can search only messages, which are downloaded into the device. hence if one synces only 3 days, the search result will be limited to those three days.
if I want more, at the end of search-results the android 2.4 client shows 'search on server', which I guess, when pressed, it should direct server to search for all the messages and list those matching search.
so far i have not seen this functionality in action. can someone post a configuration, or a way how to make this functionality running?
(for the moment if i look for some email, i run connectbot, emacs inside and search through notmuch)