Filter email field for Gmail and Yahoo

Hi there,

We’ve got a form with a “Work Email” field that is tied to SalesForce. When someone completes the form with a Gmail, Yahoo, AOL, or Hotmail account, the user goes to the “Thank You” page like they should, but the entry doesn’t go into our SalesForce system because these addresses are prohibited (on purpose). We’d like to alert the user before the form is submitted that these four types of addresses aren’t allowed so they can update the entry to a work address.

Can we add either a client-side check or a server-side check before the form is submitted to not allow these types of email addresses? Is there a place we could validate a form field against a custom regular expression before a successful submission? Thanks for your help.

– Chris Blair

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