Sending an MMS message utilizes the same endpoint as SMS (see https://docs.ytel.com/reference/sms#sendsms for more info) and requires the use of a new parameter, MediaURL.
This parameter specifies the URL of the media you want to include in your message.
Ytel supports .gif, .png, and .jpeg content and the size limit for media is 1MB. Be sure to use only Ytel MMS enabled phone numbers to send media.
Only one media url can be added per message. If you include a MediaURL then adding text within the body is optional.
Also, when you receive an inbound MMS message to an MMS enabled number, the image will be provided as a url within the MediaURL parameter.
Want to start using MMS? Please reach out to your account manager to get started!