I want to use the insight custom field in to the To of the email
please share the guide on it
If you are trying to add a custom field value to the body of an email sent through an automation you will need to use a smart value https://confluence.atlassian.com/automation/smart-values-993924860.html
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.