Hi @USMarketer,
Welcome to the Community!
I’d like to preface this by saying that I am not a lawyer, and this is not legal advice. I’d recommend consulting with your company’s legal team to know the full extent of what is and is not allowed in your geolocation.
That being said, while it is technically possible to send emails to non-subscribers via Klaviyo, it is strongly discouraged as it does violates Klaviyo’s Acceptable Use Policy. This is because these users, whose private information you are acquiring from a third-party, have not explicitly consented to receive marketing material from your brand. Using a borrowed or purchased list is subject to termination of your Klaviyo account.
To learn more about list compliance, I would suggest reviewing the About Compliant Lists help article Klaviyo offers.
You can also reference these helpful FAQ’s here:
--
Hope this helps!
-- Ashley Ismailovski