How to organize SMS-mailing for business?

Question

SMS

Good day to all.
I am looking for a company to organize a regular and large-scale SMS mailing for a large business.
It will be necessary to integrate it with an existing system (like CRM).
Requirements:

• Low cost of services with a high volume of SMS sent;
  
• Legal cleanliness of the activities carried out /
  

Thank you in advance.

Answer 1

Service sms-ka.net, you can negotiate the cost. Loyal conditions for customers.