Apple has made it easier to save and upload attachments to and from the iCloud Drive app on any iOS device. To upload an attachment from iCloud Drive using the Mail app, just press and hold the body of your email draft and select the "Add Attachment" option from the pop up bar. This will open the iCloud Drive app and allow you to attach anything stored on your iCloud. You can also select the "Insert Photo or Video" option to attach any images or videos stored in the Photos app on your device.
How do I add an attachment to an email from iCloud Drive?
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