Mail Drop is really handy for sharing large files. There are a few restrictions, but we’ll go into those later on. The download will have taken place automatically. When the other party receives your email, they find a link that lets them download it from iCloud. Mail Drop automatically detects the attachment (up to 5GB) and uploads it to Apple’s iCloud service, enabling you to feature it in the email without sending the data via your service provider. As a result, emails with an attachment bigger than the set limits bounce back, thus fail to send. The system is designed to help users get past the file size limits many email service providers impose on email attachments. To send email the feature only works with Apple’s own Mail app on those platforms, but you can receive the email from any platform.Īpple introduced Mail Drop in OS X Yosemite on the Mac and in iOS 9.2 for iOS devices, and it is supported in all current editions of the operating system (macOS Sierra and later as well as iOS 10 and later). Mail Drop is Apple’s free-to-use solution that lets you share large files from an iPhone, iPad, iPod touch, or Mac.