Makes it easy to block most email-to-sms spam – Bouncer - Private SMS Blocker Review

Most email-to-sms spam comes from addresses on a handful of free email providers; so by filtering for those few domains, the great bulk of this sort of spam can be silenced and sent to the “Junk” box without disabling the entire feature. My only criticisms are that I can’t find a way to edit existing entries, nor to whitelist individual addresses to exempt them from the rules. But all in all, it does the one job I needed it to do quite nicely.
Review by GeekOnTheHill on Bouncer - Private SMS Blocker.