Meta quietly made a change that most advertisers missed — and it is one of the most valuable updates for anyone running retargeting campaigns.
The maximum retention window for custom audiences built from purchase events has jumped from 180 days to 730 days. That is two full years.
Why This Matters
Custom audiences let you show ads to people who already took a specific action — visited your website, added something to their cart, or made a purchase. The retention window is how far back Meta looks when building that audience.
Before this update, if someone bought from you 7 months ago, they were invisible to your retargeting. Now they are back in your audience pool for up to two years.
What You Can Do With It
Win-back campaigns — Target past customers who have not bought in 6 to 18 months. These people already trust you. A well-timed offer can bring them back without the cost of acquiring a brand-new customer.
Loyalty and upsell campaigns — Reach people who bought a specific product and offer them a complementary service or upgrade.
Seasonal retargeting — If your business has a seasonal peak, you can now reach customers from the previous year’s season and remind them it is time again.
Bigger lookalike audiences — A larger seed audience means Meta has more data to build a lookalike from, which typically improves quality.
How to Set It Up
Go to Meta Ads Manager, open your Audiences, and create a new Custom Audience based on website traffic or events. In the retention window field, you can now select up to 730 days.
If you already have existing purchase-based audiences, rebuild them with the longer window. You will likely see your audience size increase significantly.
The Bottom Line
This update costs nothing extra and takes five minutes to implement. If you are not using it yet, you are leaving warm leads untouched. Rebuild your retargeting audiences today.