Most mobile carriers offer an email-to-text messaging gateway that allows you to send short messages to your cell phone. Essentially, your cell phone probably has an email address, and to have the Online Monitor send messages to your cell phone, just add your phone's email address to your setup notecard as you would any other email address.
Please see this article for more information. Just be aware that though he calls this a "free gateway", some users pay to receive text messages. Check your calling plan documentation before sending a lot of text messages to your phone.
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