The single most useful moment in a signup form is the instant before you commit to texting whoever just filled it in, because a fake or mistyped email address is often a sign the phone number attached to it is just as unreliable. Mslm Cloud's Validate Email action checks whether an address is real, fake or disposable before the rest of the Zap runs, returning a clear result rather than leaving the team to guess from the address alone.

Run that check ahead of Mobile Message's Send SMS action and a form such as Typeform or Facebook Lead Ads only reaches a genuine person, filtering out the throwaway addresses that tend to come with throwaway phone numbers too, so the text list stays cleaner without anyone reviewing it by hand. The same check can sit ahead of a Create Contact action, so a record only gets saved in Mobile Message once the email attached to it has actually passed validation.