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AffPixel Blog

Practical guides on postback URLs, S2S tracking, and connecting affiliate conversions to Meta CAPI and Google Ads.

6 min read

What Is a Postback URL? A Complete Guide for Affiliates

A postback URL is a server-to-server callback that tells your ad platform a conversion happened. Learn how postbacks work, what parameters they carry, and why they beat pixel tracking.

5 min read

Server-to-Server vs Pixel Tracking: Which Should Affiliates Use?

S2S postback tracking and browser pixels solve the same problem in very different ways. Here's when each one wins and why most affiliate programs default to S2S.

7 min read

How to Set Up a Postback URL (Step-by-Step)

A practical walkthrough for setting up your first postback URL: building the endpoint, picking macros, testing, and avoiding the mistakes that break attribution.

6 min read

How to Set Up Postback URLs in Impact.com

Step-by-step guide to configuring an Action Tracker postback in Impact.com — including SubID slots, payout macros, and how to verify it's firing.

6 min read

PartnerStack Postback Setup: The Complete Guide

How to configure PartnerStack postback URLs end-to-end — partner key macros, click-ID passthrough, and forwarding conversions to Meta and Google.

7 min read

Sending Affiliate Conversions to Facebook CAPI via Postback

Stop losing affiliate conversions to iOS 14 and ad blockers. Learn how to wire affiliate postbacks into Facebook Conversions API for accurate Meta ad attribution.

6 min read

Tracking Affiliate Conversions in Google Ads with Offline Conversion Upload

Google Ads can ingest affiliate conversions via Offline Conversion Imports. Here's how to pipe affiliate postbacks into Google using the gclid you captured at click time.

5 min read

SubID Tracking Explained: How Click IDs Power Attribution

SubIDs are the duct tape of affiliate attribution. Learn what they are, how to use them to carry click IDs through to your postback, and how to avoid the common collisions.

5 min read

Postback URL Parameters: A Cheat Sheet

Every postback URL is built from the same handful of macros. Here's a reference cheat sheet for the parameters you'll actually use across Impact, PartnerStack, ShareASale, and others.

7 min read

Postback Not Firing? 9 Common Issues and How to Fix Them

A debugging checklist for when your affiliate postback isn't firing, isn't arriving, or arrives with broken data. Work top to bottom and you'll find the bug.