Google allows you to search within email attachments, including mobile versions of Gmail

  Today Google announced that it will start indexing the attachments from the users' emails and will allow them to perform searches even in the respective attachments. The documents have become the focus of Google's attention, and the words listed in the documents received by you via email are now indexed and available for search using Gmail's search system. Entering a command such as has: attachment text in the search box of Gmail, the result will be a search through your inbox and the display of all emails containing the respective text.

  It was normal for this feature to be available in the desktop version of Gmail, but does it seem to work in iOS as well? The answer is yes, but only if you use the Gmail application, or the Google web application. The Mail application in iOS is not capable of performing searches of this kind, I don't think it ever will, so you have a choice between the Gmail application in the App Store and the web version of Gmail. The command you can use in iOS is identical to the one for the desktop version of Gmail, so you don't have to change anything.

  How good is document indexing? It depends on who you ask.