How to Use Mail Drop in iOS for Sending Large Files via Email
The newest version of iOS supports Mail Drop, a feature which allows users to upload a large file to iCloud for a recipient to download, rather than attempting to attach the large file to the email itself. This is great because it allows you to send files up to 5GB through email, when it’s not unusual for any file larger than 20MB to get bounced by the recipient email server. You’ll find Mail Drop is particularly well suited for sending large HD video files from an iPhone or iPad to elsewhere, but it obviously has other uses as well.