I am trying to populate a Mailchimp contact after an internet contact form is completed, with one of those data points being their SMS number. I saw the previous questions that this was a known bug from a year ago. I have reached out to MailChimp and they seem to think its possible now?
I get an email when a form is completed, I have a zap set up to go set by step pulling/reformatting the relevant data points before populating them into MailChimp. All of the other data points, email, name, address populate correct by not phone number into SMS




