If you see that emails sent to your internal team or organization are getting blocked, check to see if the account is on a dedicated sending domain or not first. If the account is sending on Klaviyo’s shared sending domain, your organization’s internal filter is most likely blocking the emails because of the From Address and sending domain address misalignment. This misalignment is often seen as spoofing by filters. We suggest setting up a dedicated sending domain for your account. 

For more information on How to Set Up a Dedicated Sending Domain, check out this article.

If the account is on their own dedicated sending domain and emails are still getting blocked (happens with Mimecast quite often), we suggest allow-listing your dedicated sending domain on your filtering software.