In the inbox can we send mms or only sms?

Hello Life40,

Thank you for your question! :)

Currently, the MMS is only supported for regular campaigns.
They are not being developed for inboxes and automation.
We hope this will help.

If you have more questions, please email support@shortysms.com, and our team will try to assist you the best we can. :)
Thank you once again, and warmest regards from the Originals team! :)