Related Clues:

• Place for an emoticon
• Link locale
• High-tech address
• Start of a modern address
• PC in-box fill
• Call alternative
• Cyberspace note
• Internet address opener
• Letters in a URL
• Web-site address
• Correspondence sans stamp
• It doesn't leave a paper trail?
• It starts with http
• Virtual inbox fill
• Online address, familiarly