I want to be able to place a credit spread trade in the market somewhere and then be alerted automatically to my cell phone if the stock reaches a certain level. For example, if I held a 500-510 call credit spread, I would want to be alerted when the underlying reached 495 or higher. I use Trade Monster and noticed that I can have an email sent to me. However, I receive emails all the time throughout the day for various things. I would like it to be sent to my phone as a text message so I can enter in a custom tone for the message so I know what the message pertains to. Are there any reliable, free services out there like this that you would recommend? I have seen some using a Google search, but I was hoping someone here had experience.