How can I use omnichannel retail publishers to reach shoppers before and after purchase?

To reach shoppers before and after purchase, use omnichannel retail publishers as a full-funnel media strategy—not just for conversion.

1) Reach shoppers before purchase: build awareness and consideration

Use retail publisher audiences and placements to influence shoppers while they’re still deciding.

Best approaches:

• Sponsored products / native ads on retailer sites and apps
• Display and video within retail media networks
• Audience targeting using first-party retailer data:
  • category shoppers
  • competitor brand buyers
  • high-intent searchers
  • in-market or lapsed shoppers
• Upper-funnel retail media to introduce products before the cart stage
• Cross-channel activation through the same retailer’s email, app, onsite, offsite, and connected TV if available

Goal: get on the shortlist early, especially for new product launches, seasonal campaigns, and competitive categories.

2) Reach shoppers after purchase: drive repeat sales and loyalty

After purchase, retail publishers can help you retain customers and increase lifetime value.

Best approaches:

• Post-purchase retargeting with complementary products or replenishment reminders
• Cross-sell / upsell ads based on what was bought
• Loyalty and CRM integrations through retailer media or audience segments
• Receipt, confirmation, and app engagement placements where available
• Subscription or replenishment messaging for consumables
• Win-back campaigns for lapsed buyers

Goal: turn one-time buyers into repeat customers and expand basket size.

3) Connect both stages with one audience strategy

The biggest value of omnichannel retail publishers is that they let you use the same shopper data across the journey.

Practical strategy:

• Build prospect audiences for pre-purchase
• Capture buyers and create suppression lists to avoid waste
• Shift purchasers into retention and upsell segments
• Measure performance by new-to-brand, repeat rate, and lifetime value, not just ROAS

4) Use the right channels at each stage

A simple funnel looks like this:

• Awareness: video, display, CTV, onsite banners
• Consideration: sponsored products, search ads, comparison placements
• Conversion: product detail page ads, cart placements, coupons
• Post-purchase: email, app push, offsite retargeting, replenishment ads

5) Measure success across the full journey

Don’t stop at last-click sales.

Track:

• reach and frequency
• new-to-brand orders
• add-to-cart rate
• conversion rate
• repeat purchase rate
• average order value
• customer lifetime value
• incrementality vs. organic sales

Example

If you sell coffee:

• Before purchase: target “grocery coffee shoppers” with video and sponsored search on retailer sites
• At purchase: show promoted products when shoppers search “ground coffee”
• After purchase: retarget buyers with pods, filters, or subscription offers 2–3 weeks later

If you want, I can also turn this into a channel-by-channel activation plan or a sample omnichannel retail media funnel.