Blast MMS to Audience
Send an MMS message to all contacts in an audience.
Messages are distributed evenly across the provided sender phone numbers.
Use the optional schedule parameter in options to schedule the blast for future delivery. When scheduled, the response will contain a scheduleId instead of blast details.
Authentication
Request
Array of phone numbers to send from in E.164 format.
Messages will be distributed evenly across these senders.
Note: Sandbox numbers cannot be used for blasts.
Limit: 1 min
Message with text and/or media files from a phone number.

