I wish to use PHP Codeigniter framework to create an application to send scheduled reminders via email and sms to groups of people. A customer needs to be able to register on the website and have their registration confirmed and activated via email. The customer then should be able to add people to their account, either individuals or groups. The customer then should be able to schedule reminders to individuals or groups at a future date. The reminder setup should have the capability to start reminders at a date and then send countdown reminders until the reminder date expires. Further information can be discussed with the prospective developer.