Sending SMS via Gmail

Today I got some notification on my Gmail: New Labs! Task and SMS. This is new feature that available on Gmail. Then I check it to know more. Here what Gmail Labs team says,

Tasks
Keep track of what you need to do with a lightweight task list right inside of Gmail. Just click and type to add new tasks, convert emails into tasks, and (most satisfyingly) check them off as you’re done. Once you turn on this Labs feature, look for the Tasks link to the left of your inbox under Contacts. [Read more]