Where am I not making this clear? The issue is not with SMS or MMS or email or the model of the phone. It is in how the contacts are used to send via the Text messaging ap. Can someone please take a look at my last post and answer that? And it's not "buggy" in that it works fine for others.
I understand exactly what you're talking about - it used to be a very common thing in the feature phone days - and you could email to sms too.
I had it on Sprint. I used it very often. Phone model didn't matter, as you noted - because the carrier was managing the routing so long as you used its email address conventions.
Here's the old list, defunct, of the mail to sms gateway addresses to prove it existed (at least I can prove that part for you) -
http://www.emailtextmessages.com/
First they stopped advertising it, then they changed the email address part, and eventually phased it out altogether, so far as I know. I found the Sprint site with one of their reps providing support as recently as 2013.
So - it's not just you.
Given the feature's provenance I'm surprised that you've had it this long.
While you're still aware of it working for others, perhaps they are phasing it out and you were hit first. I have no idea. It stopped working for me on Sprint before it stopped working for my wife and then the kids.
I know I haven't provided a solution but I'm with you - you're not crazy here.
I
AND = looking in my SMS Ap, I see the message has sent and it says "Doug Work Email' so the contact list is finding the email address and associating it correctly. The message sent correctly and i received it correctly. Why am I getting the error only when I select the address from the contacts list is the issue here.
If I had to guess it's because the text app has gone overboard trying to help you put in a phone number, and looks the other way when it's a contacts entry.
Have you tried other text apps?