Hey @SeanMcC,
We actually offer a great guide on how to identify Apple’s iOS MPP opens using segmentation in our How to Identify iOS15 Mail Privacy Protection Opens Help Center article. Understanding how many of your profiles utilize MPP will help determine the true impact of an email’s open and click rates. But I wouldn’t immediately discount the fact and say that just because of MPP, your open rates can’t be relied upon. In fact, bot opens and clicks in emails are not something new. Inbox providers like Gmail have used them to determine the type of content you’re sending before Apple introduce MPP.
Furthermore, how much emphasize you decide to place in open rates would be dependent on your own business model and its marketing goals. Deciding on which profile is considered “engaged” to remain on your active list follows the same theory. Neither of these would be something Klaviyo can determine for you. Rather, Klaviyo will give you the tools and data points to help you make these sort of decisions.
For example, comparing a furniture brand with a CPG (consumer packaged goods) brand, a lot of times the furniture brand is going to have lower open and click rates compared to the CPG brand. This has to do with the higher conversion window of furniture products over CPGs where they are often times re-orders or new product introductions. In both cases, if you were create an engagement segment using the same segmentation rules, you could be misidentifying profiles in the furniture brand as “unengaged”. Oftentimes because of the larger conversion window, you’ll need to account for things like this and extend the timeframe or adjust the number of emails opened/clicked.
I would also recommend checking out some other iOS 15 related Community post and resources such as the one below:
David