Google Voice got an important update to allow users to receive MMS from T-Mobile. The other way round still doesn’t work, but since the progress has been made, we expect that this part will also be added/fixed in due course. Here’s what Google Alex Wiesen shared at Google+:
We’re happy to announce this week another step towards improving MMS support for Google Voice. T-Mobile has allowed MMS messages from their users to be sent to Google Voice users. Similar to MMS messages from Sprint users, these messages will appear in Gmail, and you can be notified of the message via SMS. We continue to work with other carriers to broaden support for messaging and bring MMS to Hangouts. More good things are coming!
Yeah, it’s still far from perfect integration but it’s getting there.
It’s important to add that we don’t have Google to blame for the lack of features in Google Voice; rather, it’s carriers that are pretty much stopping the progress as they struggle against the modern trends that will effectively turn them into dumb pipes…