Optionalcallback_Override the default callback URL for this batch. Must be valid URL.
Optionalclient_The client identifier of a batch message. If set, the identifier will be added in the delivery report/callback of this batch
Optionaldelivery_Request delivery report callback. Note that delivery reports can be fetched from the API regardless of this setting.
Optionalexpire_If set, the system will stop trying to deliver the message at this point.
Must be after send_at. Default and max is 3 days after send_at. Formatted as ISO-8601: YYYY-MM-DDThh:mm:ss.SSSZ.
Optionalfeedback_If set to true, then feedback is expected after successful delivery.
OptionalfromSender number. Must be valid phone number, short code or alphanumeric. Required if Automatic Default Originator not configured.
OptionalparametersOptionalsend_If set in the future, the message will be delayed until send_at occurs.
Must be before expire_at. If set in the past, messages will be sent immediately. Formatted as ISO-8601: YYYY-MM-DDThh:mm:ss.SSSZ.
Optionalstrict_Whether or not you want the media included in your message to be checked against Sinch MMS channel best practices. If set to true, your message will be rejected if it doesn't conform to the listed recommendations, otherwise no validation will be performed.
List of Phone numbers and group IDs that will receive the batch. More info
OptionaltypeMMS
Only available in the US. Contact support if you wish to send MMS.