SMS Texting through Office 365

Dear All,

Is there a possibility of sending SMS messages, lets say in case of an emergency, to all employees or students in an education environment, using Office 365 platform. I believe natively it is not possible but is there any addin built on top of O365 which can provide this kind of service. The idea is to store user's mobile number in an active directory attribute and use it in case of an emergency situation to send alerts.

Alerts using webmail only work for US, Canada and Romania but not for other countries so that is not an option for users in France.

Thanks for any feedback/suggestions.