If you have not seen or learned about the mass text platforms I would suggest to look into it.
1. Used for recruiting to reach candidates for job openings, schedule interviews and fill positions faster
2. HR to schedule meetings and any changes instantly, employee benefit renewals, emergency if group is out of the office
3. Sales to market product or service for instant results.
Try 1000 messages out and you will see how this works.
Texting is the new world for instant action. Getting your message to unlimited people instantly.
Try it for a month and see the open rate jump by 70 percent and 40 percent response rate versa email.