I am thinking about creating a project that will hopefully be receiving millions of inbound SMS messages per day if it became successful.<p>Plivo claims to offer free inbound SMS at least from local numbers.<p>Are there any caveats to that?<p>I am wary because "unlimited free" plans typically have hidden clauses that don't mean what they advertise.<p>Just curious if anyone has run into a situation like that, or if there is another better option to plivo?