Enabling phone number validation when sending the first SMS to a new contact involves verifying the phone number's authenticity and correctness before sending a message. This process ensures the number is valid and capable of receiving SMS.
Phone number validation is a paid service from Twilio, costing $0.005 per validation attempt.
1. Start by navigating to the Settings page.
2. Next, choose your business profile from the dropdown menu.
3. Then, proceed to the General section.
4. Finally, Click here to "Validate phone numbers when first SMS is sent to a new contact"
