Has anyone used preform fills using API? How did you do that? We are looking to create this for our subscription center in our website and want to ensure that when someones email address is populated, their subscription settings are visible. We know Marketo has the cookies but we are looking for a permanent option incase the user clears their cache or is using a different browser, device, etc.

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Pre-form fills using API

Hi Jessica,

Please note that you'll want to have a web developer familiar with the concepts discussed in the article to help implement this.

John