1When writing an email, tap and briefly hold on its body display extra options. On an iPhone, tap the arrow at the bar’s right side to find the Add Attachment option.
2The default source for attachments is iCloud Drive, where you can access files created in Apple’s iWork and iLife apps and third-party apps that save there.
3If you don’t recall where on iCloud Drive you stored a file, use the search bar to find it. Type a filename, or part of one. This filters files stored on Drive as soon as you start typing.
4Attach items from elsewhere, say in Dropbox or OneDrive, by tapping Locations, then More. Use the panel to choose another source for attachments.