On Sept. 20, 2021, Apple released its much-anticipated iOS 15 software update. The update included various “privacy protection” features for iPhone users, including "Mail Privacy Protection." This feature prevents companies from seeing whether subscribers opened their emails, and instead reports an open rate of 100 percent for those using the Apple Mail app.
As the update release approached, it was predicted that the changes would significantly diminish the value of open-based engagement metrics for email marketers and impact their day-to-day strategy, including how brands use "remails" (i.e., automatically resending unopened emails), identify engaged users for cross-channel retargeting and deliverability list cleaning, and report on open-based metrics like click-to-open rate.
Now that we’ve passed the one-year mark since the update’s release, what has the impact been? After analyzing 15 billion marketing emails sent by Omnisend since iOS 15 was released and 20 billion sent before the update, dating back to 2019, we have a much clearer understanding of the true impact iOS 15 has had on e-commerce brands’ email marketing programs.
Steady Adoption, Just in Time for the Holidays
iOS 15 was released just before the 2021 Q4 holiday shopping season, and as with most updates, adoption was not instantaneous but it was evident. Open rates gradually increased through Q4 2021.