Related Clues:

• Many invoices
• Modern form of communication
• Marketing medium
• Virus spreader, often
• Web missives
• Communicate by PC
• Correspondence that's clicked
• Computer communique
• Cyber correspondence
• Serve up a smile for spam perhaps
• Messages via the internet
• Writes to, nowadays
• Letters not at the post office
• Communication option
• Gets in touch instantly with a smile surprisingly