The best way to accomplish what you're wanting en masse would be to add the Inbox Preview tool. This $10/mo tool uses the Litmus system to be able to see how the email will look in various email clients on different device types.
Beyond that @GinaL658 , you'd probably just have to put in email addresses individually if you're wanting to use the internal system to perform light Litmus tests of how that specific contact's email will look.
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