Product: Programmable SMS
- Sending a message using a From address that is not associated with any Channel or WhatsApp installation.
- Sending a message using a From address for a Channel that is pending approval.
- See here for supported formats of Channel endpoint addresses.
- To send messages using WhatsApp, the
From address should be
whatsapp:<sandbox phone number> or
whatsapp:<your twilio number>. This can be found on the WhatsApp sandbox page or WhatsApp numbers page
- If you are using the WhatsApp sandbox, ensure that you have activated the Twilio Sandbox for WhatsApp. This can be found on the WhatsApp sandbox page.