1 definition by chris2004x

When you and your friend use the inbox/e-mail feature of Gmail, Ymail, etc. to chat; to write, read and reply with someone back and forth, typically at the same high speed as chatting.

An option for those times when you cannot have a chat program open on a work computer.
La and I chatmailed all day long for months. I would write something and hit send. She would reply right away. Neither or us were allowed to use a chat program at work.
by chris2004x August 25, 2009
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