{"id":2403,"date":"2026-10-26T14:07:02","date_gmt":"2026-10-26T14:07:02","guid":{"rendered":"https:\/\/cpvlab.pro\/blog\/?p=2403"},"modified":"2026-10-26T14:10:14","modified_gmt":"2026-10-26T14:10:14","slug":"what-is-postback-url","status":"publish","type":"post","link":"https:\/\/cpvlab.pro\/blog\/tracking\/what-is-postback-url\/","title":{"rendered":"What Is a Postback URL and How Does It Work? (S2S Tracking Guide for Media Buy)"},"content":{"rendered":"\n
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A postback URL (S2S postback) lets networks fire conversion data back to your tracker without cookies adn tracker to send conversion information to the ad network. Learn how postback tracking works and how to set it up in CPV Lab.<\/p>\n<\/div><\/div>\n\n\n\n

Are you tired of running affiliate marketing campaigns blindly? Do you want to track your conversions and optimize your campaigns for maximum profit? <\/p>\n\n\n\n

If so, you need to start using Postback URLs!<\/strong><\/p>\n\n\n\n

But wait, what is a Postback URL? <\/strong><\/p>\n\n\n\n

If you never used it, you may fear that some geek talking is coming next.<\/p>\n\n\n\n

Don’t worry, I’m here to explain it to you in a way that won’t make your head spin. \ud83d\ude42<\/p>\n\n\n\n

What is a Postback URL?<\/h2>\n\n\n\n

Simply put, a Postback URL is a URL that is called by an affiliate network or tracking platform to notify you of a conversion. <\/strong><\/p>\n\n\n\n

See? Easy! But let’s explain it a little more.<\/p>\n\n\n\n

When a visitor completes a conversion – filling out a lead form, making a purchase, completing a trial signup – the affiliate network sends an HTTP request to your Postback URL<\/strong>. That request carries information about the conversion: the offer ID, the payout, and most importantly, the sub ID that ties the conversion back to the specific click that started the journey.<\/p>\n\n\n\n

That signal lands in your affiliate marketing tracker. CPV Lab receives it, matches it to the original click, and records the conversion in your reports.<\/p>\n\n\n\n

And then – this is the part most guides leave out – your tracker can fire another postback back to your traffic source<\/strong>. So your ad network learns which clicks led to actual conversions, and its algorithm can optimize toward finding more buyers like that one.<\/p>\n\n\n\n

That second signal is optional in theory. In practice, if you are not sending it, you are losing some good money there.<\/p>\n\n\n\n

Why should you care about Postback URLs? <\/h2>\n\n\n\n

Well, without them, you wouldn’t be able to track your conversions and optimize your campaigns effectively. <\/p>\n\n\n\n

You might be able to see that sales happened in your affiliate network dashboard. But you cannot see which traffic source sent the buyer.<\/strong> Which ad creative they clicked. Which landing page they came from. Which zone or placement drove the conversion.<\/p>\n\n\n\n

All of that attribution lives in your tracker <\/a>– but only if the Postback URL is working correctly.<\/p>\n\n\n\n

By using Postback URLs, you can see which offers are performing well, which traffic sources are converting, and which creatives are resonating with your audience. <\/p>\n\n\n\n

Armed with this data, you can make informed decisions about where to allocate your budget and which campaigns to scale up or shut down.<\/p>\n\n\n\n

And this is where an affiliate marketing tracker like CPV Lab<\/strong> or CPV One <\/a>can help you out. The tracker has already the Postback URL setup for all major traffic sources and affiliate networks – you just select yours and copy the URL. <\/p>\n\n\n\n

And what is even better: if you are using a special Affiliate Network or you collaborate directly with a brand, you can simply add it as an offer source in CPV Lab<\/a> and you can use the Postback URL in 2 clicks.<\/p>\n\n\n\n

Now, I know what you’re thinking:<\/p>\n\n\n\n

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“But Julia, setting up a Postback URL sounds like a lot of work! Can’t I just rely on the affiliate network’s tracking system?” <\/p>\n<\/blockquote>\n\n\n\n

Sure, you could do that, but do you really want to leave your profits to chance? <\/strong><\/p>\n\n\n\n

By setting up your own Postback URL, you have complete control over your tracking<\/strong> and can ensure that you’re getting accurate data. <\/p>\n\n\n\n

Plus, it’s not as hard as you might think!<\/p>\n\n\n\n

How Does It Work? The Full Flow<\/h2>\n\n\n\n

<\/p>\n\n\n\n

\"Postback<\/a><\/figure>\n\n\n\n

Here is the complete picture of what happens from the moment someone clicks your ad to the moment your traffic source receives the conversion signal.
<\/p>\n\n\n\n

Step 1 – Visitor clicks your ad<\/strong><\/p>\n\n\n\n

Your traffic source (e.g. Meta, RichAds, Newsbreak, push network) sends the visitor to your CPV Lab campaign URL. CPV Lab records the click and assigns it a unique click ID<\/a>.<\/p>\n\n\n\n

Step 2 – CPV Lab redirects to the offer<\/strong><\/p>\n\n\n\n

CPV Lab sends the visitor to your landign page or directly to your affiliate offer URL – with the click ID appended as a sub parameter. MaxBounty, ClickDealer, or ClickBank receives that click ID and stores it.<\/p>\n\n\n\n

Step 3 – Visitor converts<\/strong><\/p>\n\n\n\n

The visitor completes the offer goal. The affiliate network records the conversion alongside the click ID from Step 2.<\/p>\n\n\n\n

Step 4 – Affiliate network fires your CPV Lab Postback URL<\/strong><\/p>\n\n\n\n

The network calls your CPV Lab Postback URL, passing back the click ID and the payout. CPV Lab receives it, matches the click ID to the original visitor session, and records the conversion.<\/p>\n\n\n\n

Step 5 – CPV Lab fires back to your traffic source<\/strong><\/p>\n\n\n\n

CPV Lab now knows which visitor converted and where they came from. It fires a postback to your traffic source – or sends the event via Conversions API (CAPI) if you are running Meta, TikTok, ChatGPT Ads or Google. Your ad platform learns which audience, placement, or zone drove the result and optimizes toward finding more buyers like that one.<\/p>\n\n\n\n

How to setup a Postback URL?<\/h2>\n\n\n\n

Setting this up in CPV Lab takes about five minutes once you know the steps.<\/p>\n\n\n\n

To set up a Postback URL, you’ll need to log into your tracking platform<\/a> and get your Postback URL. <\/p>\n\n\n\n

You’ll then need to enter the URL provided by your affiliate ad tracking software<\/a> (such as CPVLab or CPV One or others) in your affiliate network<\/a> (such as Maxweb, MaxBounty, GoldenGoose, etc) and make sure the parameters that you want to track are correctly setup.<\/p>\n\n\n\n

Here are the steps:<\/p>\n\n\n\n

Step 1 – Add the click ID token to your offer URL<\/strong><\/p>\n\n\n\n

Before anything else, you need to make sure the affiliate network can pass the click ID back to CPV Lab on conversion. You do this by adding CPV Lab’s sub ID token to the offer URL inside your campaign.<\/p>\n\n\n\n

Each network uses a different parameter name:<\/p>\n\n\n\n

Network<\/th>Add to offer URL<\/th><\/tr><\/thead>
MaxBounty<\/td>&s2={!subid!}<\/code><\/td><\/tr>
ClickDealer<\/td>&s2={!subid!}<\/code><\/td><\/tr>
ClickBank<\/td>&tid={!subid!}<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

CPV Lab replaces `{!subid!}` with a unique ID for every click. The network stores it, then returns it when the conversion fires.<\/p>\n\n\n\n

Step 2 – Copy your CPV Lab Postback URL<\/strong><\/p>\n\n\n\n

The ad tracker<\/strong> will provide you with the exact Postback UR<\/strong>L format. All you have to do is copy and paste it in your affiliate network. <\/p>\n\n\n\n

You can find it for each affiliate network you use under the “Offer Sources” tab or in your campaign setup page.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

It will look like this (using your actual tracking domain):<\/p>\n\n\n\n

MaxBounty:<\/p>\n\n\n\n

https://your-tracking-domain.com\/adclick.php?subid=#S2#&revenue=#RATE#<\/code><\/pre>\n\n\n\n
ClickDealer:<\/p>\n\n\n\n
https://your-tracking-domain.com\/adclick.php?subid=#s2#&revenue=#price#&txid=#tid#&custom1=#currency#<\/code><\/pre>\n\n\n\n
ClickBank:<\/p>\n\n\n\n
https://your-tracking-domain.com\/adclick.php?subid={tid}&revenue={affiliate_earnings}&status={event_type}&txid={order_id}&custom1={vendor}\n<\/code><\/pre>\n\n\n\n
The tokens in `##` or `{}` are the network’s own placeholders – they fill them with real values when they fire the postback to CPV Lab.<\/p>\n\n\n\n
Step 3 – Paste the Postback URL into your affiliate network<\/strong><\/p>\n\n\n\n
Finally, you’ll need to copy the Postback URL and paste it into the appropriate field in your affiliate network’s settings. <\/p>\n\n\n\n
Each network has different menus, but they are similar. For example:<\/p>\n\n\n\n