Name Type Required Comments
keyword string Yes

The id for the keyword you want to send to. If you only want to send to specific contacts subscribed to the keyword, you can pass in their ids using the contactIds attribute below.

Note: If no contactIds are specified, then all contacts subscribed to the keyword will receive the SMS message.
contactIds string No The id(s) of the contacts on the keyword you want to send to. This can be a single contactId or an array of contactIds.
Note: If you are sending to a single contact, use the SMSDeliveryContactsObject to specify the contact ID.