How to find anything with Spike’s Super Search
To search for something specific, scroll down in your inbox until you see the magnifying glass icon appear and release. The search box and the keyboard will automatically open.
Here you can type one or more relevant keywords, and Spike will show and highlight all the relevant threads and messages. This can help you with visually seeing all the attachment ever sent by someone, without having to open emails one by one. You can filter your search with some useful options like a specific recipient, your files and you Starred messages.
Another option to search, (the obvious way) is to click the magnifying glass on the top right corner and it will open the search box.
Open search on Mac
Open search on Windows > Ctrl+F