One major change that was introduced with iOS 9 was the new
iCloud Drive app that allows you to view and organise files that are stored online inside your personal 5GB of iCloud storage. Mail can now link in with iCloud Drive too, giving you a quick and easy way of adding file attachments to your emails.
When you’re writing an email you can simply press and hold on the screen to activate the Options menu. The screen of an iPhone may not be wide enough to display all the options in this menu, so you’ll need to tap the little arrow on the far-right of the menu to scroll through the various options that are available (or turn the iPhone sideways into landscape mode as we’ve done here).
Along with the existing option to add a photo or video you’ll now see a new button marked ‘Add Attachment’. Tapping on this button opens the iCloud Drive app, where you can select the file you need. You’ll then switch back into Mail and the file will be added to your email ready to send whenever you’re ready.