post
https://dialpad.com/api/v2/sms
Sends an SMS message to a phone number or to a Dialpad channel on behalf of a user.
Provide either to_numbers or channel_hashtag as the recipient, and either text or media as the content. A channel's hashtag is available from the channel endpoints.
Tier 0 Rate limit: 100 per minute.
Tier 1 Rate limit: 800 per minute.