What Flow Filter Condition will Prevent People from Coming in With a Certain email?

Hi @FB3, 

Thanks for sharing your question with us! Happy to help! 

Yes, in order to filter out a certain email, you would use a flow filter with the following conditions. Flow filters are useful when you'd like to target specific subscriber behaviors or attributes. Flow filters operate at the profile level, meaning they will evaluate whether or not someone qualifies based on properties about them or actions they have previously taken. 

Would love to explain more about these other flow filter options! Both $address1 and $source are referencing the klaviyo properties of the profile. $address is the profile’s address properties and the $source references the way that the profile found its way into your Klaviyo account. For example, in the screenshot below, the profile found its way into Klaviyo through this certain Klaviyo form ‘Join the Book Exchanger Club’.

Thanks for participating in the Community! 

-Taylor