What is it?
We are launching a new metric called Adjusted Open Rates (AOR). AOR is a version of the existing Open Rate that reports on the % of human opens (also known as reliable opens) within the population of emails that discounts emails with events associated with Apple Devices (also known as unreliable opens)
Formula to calculate AOR:
Reliable Opens: Emails expected to be opened by actual humans
Unreliable Opens: Emails suspected to be opened by bots/machine
Why does this matter?
Open rates have become immensely convoluted since the inception of the iOS 15 privacy changes, affecting a marketer’s ability to measure email engagement accurately. This is because it is extremely challenging to attribute an open event from any Apple Device as reliably opened by a human or a bot.
Given this, HubSpot’s philosophy was to build a solution around Open Rates that offer maximum reliability to our customers. HubSpot does not believe that Apple will be the only email client to enact a change of this type, and is therefore focused on building a solution that is scalable across providers. Adjusted open rates will:
- Help customers understand the % of human opens within the population of emails that discounts emails with events associated with Apple Devices or MPP
- Provide a comparative point of view between the disparity of overall open vs adjusted open rate
Note: The numbers are just estimates, as it is challenging to distinguish between a human or bot event if coming from an Apple device.
How does it work?
How does it work?
1. Navigate to the Performance Tab after selecting a sent email
2. Click on the Calculate Adjusted Open Rates open button
3. Use the links in the Panel to know more details about Adjusted Open Rates
Who Gets it:
Live to all!
Things to note:
- Any calculation around open rates are mere estimations
- Only available for portals that have Bot Filtering ON
- Currently not available for List filters on the performance page
If you have any questions about the details of this change, please ask in the comments below!



