Samsung galaxy s5 mini custom contact tones

[AC Question]

Hi, I am wondering if anyone e else has had this issue or might havea suggestion. I have been able to successfully set a text tone for an i dividual contact and it has worked when the nave text me. But if that same contact text me from email useing my att email to text address I get the text as I do any other but the to e is the default. I would also lime to know if there is a way to set the tone for a received email from a particular contact.