While I understand not wanting to turn this into an MMS app, being able to process and not loose information received by MMS is crucial for many use cases where this app is used.

We have customers that send us unrequested images by MMS and right now

1. We don't know we received an MMS unless the customers states it in a regular text message
2. We have no way of seeing that MMS unless we have physical access to the device.

I believe some basic processing of incoming MMS (photos) would be very valuable to many users, myself included.

Best,
Tiago