Search for Emails
If you’re using Apple’s Mail app on macOS or iOS, you’ll also see results from email messages in your Spotlight search results, making it a really quick and easy way to find something you’re looking for in an email.
For example, if you’re looking for a receipt for a recent Amazon order, just call up Spotlight, on your Mac, iPhone, or iPad, and type in the order number or the product name, and it should come right up in the search results. On macOS, you’ll even see the entire email message right tin the preview pane on the right-hand side, so there’s no need to open the Mail app to see the message unless you need to do something else with it like reply or forward. In that case, a simple double-click or press of the return key will open Mail, with the selected email message front and centre.
This also works in some third-party apps, although of course they need to include Spotlight support. Microsoft’s Outlook for Mac is a good example of one that does, however.