What if you could send mass SMS or email to clients or customers from your own server? What if you had international members who also need to receive announcements through SMS? This is the manager you need. You can store important member information as name, phone, email, birthday, address, zip code, gender and even photo. You can even group these members and send sms or email to a particular group.
Demo: https://codecanyon.net/item/php-mass-email-voice-sms-membership-manager/4083160