SMS API

• What is Link-tracking?
• My message was replaced
• How to use DialSMS?
• MMS is not supported
• Incoming-call notification URL
• What does "Sender ID" do?
• What is K-premium service?
• How many characters would fit within 1 x SMS?
• I want to include a lot of info in 1 SMS
• 504 error shown at SMS sending