How to use Yahoo!7 Messenger for SMS
Pricing details
Carrier charges may apply for sending or receiving text messages. Check your wireless plan for details.
Initiating a message:
(1.1) Send an instant message to your Yahoo!7 Messenger contacts using their Yahoo! ID. To begin, address a text message (SMS) to one of the codes below, which will vary by carrier:Carrier Code Optus 2277 Telstra 019834 Vodafone 126007 
(1.2) Type: to [Yahoo! ID] [message]
See an example.
(1.3) Click Send/OK.
Now, learn how to sign out of Yahoo!7 Messenger for SMS.
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If your contact's Yahoo!ID is johndoe85 and your message is hello john, your text should read: to johndoe85 hello john.
* Leave a space between to, your contact's Yahoo! ID and message, as illustrated.
Yahoo!7 Messenger for SMS is currently available in the following countries: See countries
Americas: