Editing Mailto:support@activecampaign.com (section)

=== Predictive sending ===
With the August 2022 updates, Predictive Sending will include MPP open data when deciding when to send your email. Predictive sending uses a machine-learning algorithm to calculate when to send an email to a specific contact based on their previous engagements. Most engagements rely on email opens and link clicks to identify the optimal time to send an email.

Opens coming from Apple Mail traffic with MPP enabled will be excluded from the machine learning dataset. This means that predictive sending will be less accurate for contacts if all of their email interactions are on an MPP-enabled device. When this happens, we'll select a random send window based on our model's known peak engagement times.