For web2sms and www2sms, we can chose the account/website. Each websites have their own systems. For example, I can send free sms within India and middleEast using www2sms and 160by2. It all depends on what the site is offering. The good thing is that web2ms and www2sms follow a plugin method to add services and hence if Jaxtr releases an API in the future, it will be easy to add it to the app.