Right, I've been experiencing this since the purchase of our LG Rebel. For some reason, the MMS feature is not working correct as to send any data to my email.. which is an issues like yours because the MMS text option had a picture from the gallery within the message. I'm under the assumption that if I was able to over ride the MMS text so that it would use only the SMS text system, I might be able to send the message to the email.
Pictures taken with the Pixel 9 Pro and XL
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