Verify Your Facebook Domain Now to Avoid Data Loss on iOS 26

Did you know that with just one small step, you can retain all your Facebook ad data, even when iPhone users opt out of tracking? That step is domain verification. It might sound technical, but it's actually much simpler than you think.

Since Apple launched iOS 26 with its App Tracking Transparency (ATT) policy, the entire digital advertising industry has been turned upside down. Facebook Pixel can no longer record conversions from iOS users as it used to. However, Facebook has introduced an alternative solution: the Aggregated Event Measurement (AEM) system. To use AEM, you are required to verify your domain on Facebook Business Manager.

Why is Domain Verification So Important?

Imagine you're running a Facebook ad campaign for an online fashion store. Before iOS 26, Pixel could track every step: who viewed a product, who added it to their cart, who made a purchase. After iOS 26, if a user chooses “Ask App Not to Track,” Facebook is practically blind. But with AEM, data is still collected in an aggregated form, not tied to individuals, allowing you to still see which campaigns are effective. However, AEM only works if your domain has been verified.

Without verification, you will lose the ability to measure conversions from iOS users – a significant portion of your potential customer base. For those running e-commerce ads, this could be a fatal blow.

Who Should Verify Their Domain?

Many business owners often delegate this task to agencies. However, Facebook itself recommends that you do it yourself. Why? Because when you verify it yourself, you have full control over your domain. If an agency handles it, you might encounter problems later when switching partners because the domain is already "linked" to their Business Manager account. Doing it yourself is both transparent and secure.

Step-by-Step Guide to Domain Verification

Step 1: Access Facebook Business Manager

First, go to business.facebook.com. In the left-hand menu, select Business Settings. Scroll down to the Brand Safety section and click on Domains.

Step 2: Add Your Domain

Enter your root domain, for example, yourdomain.com, into the search bar. When your domain appears, click the blue Add button. Facebook will then ask you to verify by adding a TXT record to your domain's DNS.

Step 3: Add the TXT Record at Your Domain Provider

Log in to where you manage your domain (GoDaddy, Bluehost, Cloudflare, etc.). Navigate to the DNS Records section. Create a new record with:

• Type: TXT
• Name: @ (if prompted)
• Value: Paste the TXT code provided by Facebook

Then, save the changes.

Step 4: Verify on Facebook

Return to the domain verification page in Facebook Business Manager and click Verify. This process can take up to 72 hours for DNS propagation. Once successful, you will see a green checkmark and the message “Domain Verified.”

What Do You Gain After Verification?

Now, you can create aggregated web events for your domain. This allows Facebook to measure conversions from iOS users even if they don't permit tracking. If you don't verify, you won't be able to create these events, meaning you'll completely lose data from iPhones.

Additionally, domain verification helps you control who can run ads using your domain, preventing impersonation or brand misuse.

Important Notes

• Use the root domain (without www) as Facebook automatically handles variations.
• If you use multiple subdomains, each one needs to be verified separately.
• TXT records can take a few hours to 72 hours to become effective. Don't worry if you don't see it immediately.

Some users encounter errors when adding TXT records due to typos. Please copy the code exactly from Facebook and avoid typing it manually.

A Real-World Story

I once saw a fairly large fashion shop whose reported Facebook conversions dropped by more than half after iOS 26. They panicked and tried everything. Ultimately, the cause was simply that they hadn't verified their domain. After completing the verification, their data stabilized. Such a small step had a huge impact.

Therefore, if you haven't verified your domain yet, do it today. Don't wait until your campaigns are running and you can't measure anything to start scrambling.

And you, have you verified your domain for your Facebook Business Manager? Did you encounter any difficulties at any step? Please share in the comments below so everyone can help each other!