Practical cellphone use
Cel.ly sends text messages to large groups of people. This service isn't limited to simply pushing out messages to your team about a field change, it let's you interact both privately and as a group. There are options to send out group messages, 2-way texting, poll your entire audience, and schedule texts to be sent at a certain time and date.
You don't need to even have text messaging yourself, Celly can do all of the texting for you through their website. If you want to read more, check out Celly's Tips & Tricks.
Celly was build by a parent seeking safe ways for teachers to communicate with broad audiences, with cyberbullying and individual privacy on the forefront of their product. There are a number of levels to moderate messages sent through Cel.ly.