Hello @TracyS786 and @csdavis,
Thank you for reaching out to the community!
The best way to double check for custom fields is to click on the contact profile or if you would like to check all of them at once export your list. This will give you all of the contacts and any custom fields that you choose to export for easy review.
Adding these fields to the email body is very easy. You will need to access the insert menu while editing a block to use this option. For full instructions click here.
I hope that this was helpful!
Please let us know if there is anything else we can do for you.
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