Explained
The questions we get asked most.
SMS
SMS
How do I avoid sending the same SMS twice?
SMS
How do I collect SMS opt-ins?
SMS
Opt-in, opt-out or double opt-in: which consent model applies to SMS?
SMS
Short code, long code, toll-free or alphanumeric: which SMS sender type should I use?
SMS
SMS vs MMS: what is the difference?
SMS
What are SMS carrier fees and surcharges?
SMS
What are SMS quiet hours?
SMS
What does SMS mean?
SMS
What is a concatenated SMS?
Build on the same network.
A test API key is yours immediately. Production unlocks when you add a payment method and verify a sender.