Related Clues:

• Internet messages
• Cybermessages
• Computer contacts
• Modern letters
• Internet letters
• Contacts, in a way
• Contacts quickly, perhaps
• Contents of some in-boxes nowadays
• Modern memos
• Spam, for example
• In-box fill
• Sends, in a way
• Sends a message by computer
• Forgoes the USPS
• Net receipts?