Q: cont

I have an iphone linked (text message forwarding enabled) to my macbook running el-capitan. For imessaging I have only my phone number as being able to receive and send imessages. A friend has an ipad using his email for imessaging and a non-apple phone. I have both his contact details under the same contact entry in my address book. From my iphone I can choose recipient, or more accurately maintain two separate chat windows, in order to send a message either as an sms to his phone or an imessage to his ipad. On my macbook I can see in one chat window all his messages which is great, whether they are sms or imessages, as well as my imessages from both devices and the sms messages sent from my iphone. However, whenever I try to send a message from my mac to his non-apple phone, i.e. to his phone number, it always tries to send it as imessage and fails with error message <phone number> is not registered with iMessage, without any option to send it as sms. In fact ideally it would for contact A if send to A's email then send as imessage, else if send to A's phone number send as sms using your linked iphone.

Is there any way to do this?