Forms 2.0 custom validation script blocks web-based email domains

Question

Has anyone figured out or written a script that can be used with Forms 2.0 that will validate and block web-based email domains, such as @gmail, @hotmail, @yahoo, etc? The script should return an error message that informs the form-filler-outer their email is not acceptable, and block submission of the form until the validation is satisfied. I would LOVE to see a copy of that script if one exists. There's no example of a script like this on the Developers Forms 2.0 page: Forms 2.0 » Marketo Developers

I'm not a developer and cannot write a script so if anyone has figured this out I would be ETERNALLY grateful. Thanks!

SanfordWhiteman · Answer

There's this old(ish) chestnut: MktoForms2 :: Force "Corporate" Email - JSFiddle

But bear in mind that there aren't just a handful of such domains. If you want to be complete, the giant, canonical list is here: http://svn.apache.org/repos/asf/spamassassin/trunk/rules/20_freemail_domains.cf

Rather than maintaining a copy of the freemail list in JS, you might consider using an email validation service that classifies domains into free/non-free (in addition to validating address existence).

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