Twilio account with N logins; use it to receive the verification SMS messages. (You can do something mildly clever and split them in real time to both phones bu

Twilio account with N logins; use it to receive the verification SMS messages. (You can do something mildly clever and split them in real time to both phones but easier just to send them to a vacuous script and get them from the logs in the Twilio dashboard.) This doesn't work everywhere but my experience is Twilio numbers pass verification ~80% of the time for the set of services I use them on.