Not really no. The Data schema exists in Prod but not in the sandbox. So I dont have the fields that will be on the record. However, to your point, could I set up a workflow that imports a spreadsheet and then maps those fields to the custom data variables I have in the HTML?

Thank you for your response! My data schema has fields that are not in my recipients table. My hope is that I can test the dynamic variables in my email by using that schema in my sandbox before pushing to Prod. But perhaps I am thinking about it the wrong way.

Thank you for your response! My data schema has fields that are not in my recipients table.

Hello!  I am developing an email that will send using a specific data schema, but I do not have that schema in my sandbox.  I am wondering if the correct flow for this would be to start a workflow -> call the data schema in question -> populate the variables - but how would I populate the data schem...