Selecting this will automatically move photos or videos into your Photos app gallery.
Tap this to send the file directly to another app, such as WhatsApp, or to a third-party file manager like Documents by Readdle . Where Do Downloaded Attachments Go? iphone download mail attachments
the attachment icon or preview until a menu appears. Choose your destination: Selecting this will automatically move photos or videos
Download email attachments in Mail on iPhone - Apple Support such as WhatsApp