A listener finishes your latest podcast teaser and texts your number asking how to get the full private episode. That single reply is the moment worth building an automation around, because it can flow straight through Zapier into Castos and grant them access without anyone opening the podcast dashboard.

Connect Mobile Message's Inbound SMS Received trigger to Castos so that a reply from a listener creates a private subscriber, giving them access to the protected podcast feed straight away. The same connection works in reverse for cancellations, so a subscriber texting back to cancel can revoke their private subscriber status instead of leaving them on the feed after they've asked to stop.

For a podcaster running a paid or members only show, this turns a text message into the only step needed to manage who's allowed into the feed, cutting out the manual work of adding and removing subscribers by hand every time someone gets in touch.