Opt a number back in to SMS

Removes a phone number from your team's outbound SMS opt-out list, so SMS can be sent to it again. It is the exact reverse of POST /sms/opt-out.

The team is taken from your API key, so it is not part of the payload. The number must be in international format (E.164), with or without the leading +; a national format such as 0612345678 is rejected. Opting in a number that was never opted out succeeds and changes nothing.

Note that this removes every opt-out entry your team holds for that number, whatever the sender number it was recorded against. A single call re-subscribes the recipient to all of your team's numbers.

Permission: Conversations Write required.

Monitoring: No impact.

{
  "phone_number": "33611223344"
}