Just in time for the holidays, Meta is bringing back 28-day click attributionClick Attribution is one way Meta gives credit to an ad for a conversion. Credit will be given to an ad when someone clicks your ad within a specified number of days of clicking. Click Attribution options include 1-day click, 7-day click, and 28-day click, the last being only available for reporting. More.
This is some of the best news advertisers have received in a while. At the moment, though, I haven’t seen anything official from Meta on the reasoning behind it, the quality of that reporting, or what it means for the future of optimizationThe Performance Goal is chosen within the ad set and determines optimization and delivery. How you optimize impacts who sees your ad. Meta will show your ad to people most likely to perform your desired action. More and reporting.
So, for now, let’s discuss what has happened, how it impacts your advertising, and what it could mean.
The History of 28-Day Click
Prior to iOS 14 changes, Facebook used separate attribution windows (for reporting) and conversion windows (for optimization). One major change was the move to an Attribution Setting (for both optimization and reporting) and the removal of 28-day click.
While advertisers complain of a drop in performance since these changes, I believe the blame has been misplaced on iOS opt-outs. Aggregated Event MeasurementAggregated Event Measurement is Meta's protocol for handling tracking opt-outs from iOS devices. AEM initially required advertisers to configure and rank eight events and verify their website, but those requirements were removed in 2023. Aggregated Event Measurement still exists, but Meta handles it on the back-end to comply with Apple requirements on privacy. More should still find many of your prioritized events. The biggest change was the loss of the 28-day click window.
When 28-day click attribution existed, we’d often get questions about whether Facebook ads reporting was inflated. But once it went away, those questions moved to panic about conversionsA conversion is counted whenever a website visitor performs an action that fires a standard event, custom event, or custom conversion. Examples of conversions include purchases, leads, content views, add to cart, and registrations. More dropping.
And it makes sense. Especially for sales of products that may take longer than seven days to make a buying decision, there’s every reason to believe that advertisers have been hurt by these “lost” conversions.
The Return of 28-Day Click
It’s been an eventful week or so. Just a few days ago, Meta brought back the Compare Attribution Settings feature. And it’s with that feature that we now see the return of 28-day click.
Open the Columns drop-down in Ads Manager and scroll down to “Compare Attribution SettingsCompare Attribution Settings is a feature within Ads Manager reporting that allows you to view how many conversions happened within each attribution window, regardless of the Attribution Setting used for optimization. For example, columns can be added to your report for 28-day click, 7-day click, 1-day click, and 1-day view to see how conversions are distributed across them. More.”

That feature now looks like this…

You can add a column for 28-day click to view how many conversions happened in that window, regardless of your Attribution SettingAttribution is how Meta gives credit to an ad for a conversion. Your Attribution Setting determines how your ad will be delivered and the reporting attribution window. The default Attribution Setting is 7-day click and 1-day view, which means that anyone who converts within 7 days of clicking or 1 day of viewing your ad will be counted as a conversion. More.

Optimization vs. Reporting
Keep in mind, the addition of 28-day click is only for reporting. The default reporting is still based on your Attribution Setting, which is determined in the ad setAn ad set is a Facebook ads grouping where settings like targeting, scheduling, optimization, and placement are determined. More. To see the 28-day click conversions, you’ll need to use the Compare Attribution Settings feature.
If you’re wondering, nothing has changed to Attribution Settings (yet, at least). There isn’t an option for 28-day click.

If there were, this would change how your ad set is optimized to include those who converted after 28 days of clicking.
How Can This Be?
Meta got rid of 28-day click for a reason. Presumably, various privacy changes have resulted in a lack of confidence in tracking beyond seven days. So, how could they bring it back now?
Well, there is no official statement from Meta on this, so I only have some assumptions. Keep in mind that originally the Attribution Setting was 7-day click only. Meta pulled way back initially. The company has said that modeling and machine learning have improved reporting.
It’s possible, if not likely, that Facebook has always had 28-day click reporting information during the past 18 months or so. And we also shouldn’t forget that not everyone is on an iOS device. Even if Meta is unable to attribute 28-day click conversions for users who opt-out on iOS devices (not known), there’s a world of potential conversions remaining.
It would seem, though, that privacy restrictions will only get tighter in the future. Meta must feel confident that those restrictions will not hinder 28-day click attribution or they wouldn’t have bothered bringing it back.
I would understand any cynicism related to the timing of this release. You may be able to uncover more conversions just in time for your holiday campaignsThe campaign is the foundation of your Facebook ad. This is where you'll set an advertising objective, which defines what you want your ad to achieve. More. This may alter your view of the performance of those efforts.
What You Should Do
This is where advanced advertisers will separate themselves from typical advertisers. Typical advertisers won’t even know this exists. Advanced advertisers will use this to uncover more conversions and show clients the relative success of their ads.
Do not be afraid to use this. Understand that the customer journey often takes longer than seven days after a click.
Watch Video
I also recorded this short video about the return of 28-day click. If you aren’t following me on TikTok yet, please do!
@jonloomer 28-day click attribution is back for Facebook ads! #facebookads ♬ Zodiac | Seamless Looping Trap Hip Hop Instrumental – xklbeats
Your Turn
Do you have this update? What do you think?
Let me know in the comments below!