Unless I've been doing something wrong I've never been able to send or receive text messages to Android users from my iMac. Only the iMessage threads showed up on my desktop version of Messages. I believe this changed after updating my iPhone to iOS 17.1.1 yesterday, but I don't know for sure. Another change is that two-factor authentication codes are now automatically appearing on my iMac. I no longer need to grab my iPhone to get the codes when accessing a website on my iMac. I just assumed the codes were not delivered by iMessage, so I was unable to get them conveniently on the iMac. The codes now appear magically next to the input field. I find this all very pleasing and the timing is interesting with the RCS messaging standard news that just broke. Probably just a coincidence though.