Yes. up.time Uptime Infrastructure Monitor can send a regular format email to an SMS-enabled address by using the pager address field within the up.time the Uptime Infrastructure Monitor user settings. For example: 123456@pcs 123456@pcs.myphonecompany.com.
The script alert option can also be used to send a true SMS message via an SMS modem or an online SMS service. This option allows you to customize a script that will send alerts in your defined format and transport mechanism.
An example script to utilize an SMS modem can be found in this Community Forum post.