Related Clues:

• Letter sent with a click
• Address with an @
• Item in a drafts folder
• What many a meeting could've been
• It might be written on a tablet
• One may be forwarded
• Number on older business cards
• "Inbox zero" hindrance
• Communication that may baffle millennials
• It has options for 'cc' and 'bcc'
• Phone-y document?
• Mother during rest returned message
• Message that can be forwarded
• Seems a girl regularly used communication system
• Messages sent without a stamp