MMS, short for Multimedia Messaging Service, is a standard way to send multimedia such as pictures, videos, and other attachments over text messaging channels.
How is an MMS message delivered?
When sending an MMS message, the sending device must encode the multimedia content, similar to sending a MIME message. The message then is forwarded to the carrier's MMSC (Multimedia Messaging Service Center), which is a store and forward server. The MMSC acts as a relay if the receiver is on a different carrier from the sender and forwards the MMS message to the MMSC of the receiving carrier.
Leverage bulk messaging - Twilio offers support for 30 MMS per second with a Twilio shortcode.