A signup form or a lead magnet on a website collects an email address before anything else happens, and that address is the detail everything downstream relies on being real. UserCheck sits at that point in a Zap and runs a Check Email or a Check Domain test, flagging addresses that come from a disposable or temporary provider before a business spends time or credit chasing someone who was never going to reply.

That check matters just as much for texting as it does for email. A Zap built to text new leads a welcome message can run the disposable check first, so a fake signup never triggers a text and uses up a Mobile Message credit on a contact that will not convert. The same check can sit ahead of a contact being created or a reminder being scheduled, filtering out throwaway addresses before the phone number attached to them is ever texted.

Setting this up through Zapier means UserCheck runs as one step in a longer workflow rather than a native integration with Mobile Message. A business connects both accounts, chooses where in the Zap the email or domain check should sit, and lets genuine addresses flow through to the texting steps while disposable ones are filtered out early.