ChatGPT answers, unedited

Yes. There are several tools now built specifically around first-party / cookieless visitor identification and retargeting. The important distinction is whether you want to:

1. Track anonymous visitors and retarget them with ads, or
2. Identify anonymous visitors as actual people and retarget them via email/SMS/ads.

A few worth looking at:

For example, Yield Day explicitly describes itself as an anonymous first-party data platform that scores visitor behavior and syncs audiences for retargeting. www.yieldday.com

If your goal is specifically “someone visits my site anonymously → I recognize that same person later → I can put them into a Meta/Google retargeting audience”, I'd look particularly closely at Yield Day, Stiddle, AnyTrack, and FirstParty. They take somewhat different approaches to the identity problem. www.yieldday.com

One caveat: “first-party” doesn't automatically mean “privacy-free.” Some vendors claim to identify anonymous visitors using identity resolution/device signals, which can have significant consent, GDPR/CCPA, and platform-policy implications. SmartPiXL, for instance, explicitly markets identification of anonymous visitors into names/emails and other attributes. m1-data.com

If you tell me your use case (e-commerce, SaaS, lead gen, publisher, etc.) and whether you want Meta/Google/LinkedIn retargeting, I can narrow this down to the 2–3 tools that actually fit, including pricing and how each one gets around third-party-cookie loss.

Yes. There are several tools now built around first-party/server-side tracking and identity resolution, rather than depending primarily on third-party cookies.

A few worth looking at:

The important distinction

There are actually three different things people call "cookieless retargeting":

1. First-party cookie tracking

Your site sets its own identifier. This is substantially different from a third-party cookie, and platforms such as Adobe explicitly use first-party IDs for visitor recognition. experienceleague.adobe.com

2. Server-side tracking + ad-platform APIs

Your site captures first-party events and your server sends them to Meta/Google/etc. This is probably the most robust approach if your goal is better retargeting and attribution without relying on third-party cookies. FirstParty, AnyTrack and RedTrack fall largely here. www.gofirstparty.com

3. Anonymous visitor → real-person identity resolution

Tools like SmartPiXL, Bullseye and some visitor-ID products attempt to determine who an otherwise anonymous visitor is and then activate that identity for marketing. That's a considerably more privacy-sensitive category. www.bullseye.som1-data.com

If what you're asking is: "Can I put something on my website that remembers visitors using first-party signals, builds an audience, and then retargets them on Meta/Google without depending on third-party cookies?" — yes, absolutely. I'd look first at FirstParty, AnyTrack, or RedTrack rather than a pure visitor-identification product.

If you tell me whether this is B2B, SaaS, or e-commerce, and whether you specifically want Meta/Instagram, Google, LinkedIn, or all three, I can narrow it down to the 3–5 best options and compare pricing, identification method, and privacy implications.

Yes. The category you're looking for is generally first-party identity / visitor identification + server-side retargeting. There are several products doing this, but they differ significantly in how they identify anonymous visitors.

Strong options

CustomerLabs, for example, explicitly uses a CNAME on your domain and server-side cookies to maintain first-party identity, then activates that data across Meta, Google, TikTok, Snapchat and LinkedIn. www.customerlabs.com

The important distinction

There are actually three different things people call "cookieless retargeting":

1. First-party tracking

You recognize a browser on your domain using a first-party identifier. This is the most straightforward replacement for third-party cookies. Adobe and Optimizely use this basic model. experienceleague.adobe.com

2. Server-side first-party identity

Your server maintains the identifier and sends events/audiences to ad platforms through APIs such as Meta CAPI. This is probably what you want if the goal is to minimize browser-side tracking loss. CustomerLabs and FirstParty are examples. www.customerlabs.com

3. Anonymous → real-person identification

A vendor tries to determine who an otherwise anonymous visitor is and gives you an email/phone/consumer profile. Gobot and SmartPiXL are examples. This is much more powerful, but also raises substantially more privacy/compliance and data-quality questions. www.getgobot.com

If your actual requirement is:

"Someone visits my site, I don't know who they are, I want to remember their behavior using my own first-party infrastructure, and then retarget them on Meta/Google without depending heavily on third-party cookies."

I'd look first at CustomerLabs, AnyTrack, or FirstParty.

If instead you mean "identify an anonymous visitor by name/email even though they never submitted a form", that's a different category—and there are some surprisingly aggressive tools for that.

Yes. The category you're looking for is usually first-party visitor identification + server-side retargeting, rather than traditional third-party-cookie retargeting.

A few options worth looking at:

• FirstParty — probably closest if your main goal is ad retargeting. It uses server-side tracking and sends events to Meta CAPI, Google Ads, TikTok, etc., while maintaining first-party tracking on your domain. www.gofirstparty.com
• Warmly — stronger for B2B visitor identification. It tracks first-party web behavior, identifies some visitors at the person/company level, and can push identified contacts into LinkedIn/Meta audiences. www.warmly.aiwww.stiddle.comwww.ablecdp.comwww.warmly.ai
• Stiddle — positions itself as a cookieless customer-intelligence/attribution platform, with a persistent tracking system that doesn't depend on even first-party cookies. www.stiddle.com
• RudderStack — more of a developer-oriented CDP. It collects first-party events, resolves anonymous → known users, and can route those audiences/signals to downstream marketing destinations. www.rudderstack.com
• Able CDP — focuses specifically on first-party/server-side attribution and sending conversion data to advertising platforms without depending on third-party cookies. www.ablecdp.com

The important distinction

If you mean:

“Someone visits my site anonymously → I recognize that browser/person later → I put them into a Meta/Google/LinkedIn retargeting audience.”

Then FirstParty, Stiddle, and Warmly are the most directly relevant.

But there's an important limitation: “first-party” doesn't mean “I can identify every anonymous visitor.” For example, Warmly says its person-level identification varies by traffic source and reports roughly 20–40% typical person-level resolution, while its underlying system can use cookies, IP matching, and other identity signals. www.warmly.ai

If your priority is privacy + durability against Safari/Firefox/ad blockers + maximum retargeting audience size, I'd look particularly closely at server-side first-party tracking + Meta CAPI/Google Enhanced Conversions, rather than trying to recreate the old third-party-cookie model.

If you tell me whether this is B2B or B2C/e-commerce, I can narrow this to the 3 best tools and explain exactly how the visitor → identity → retargeting pipeline works.

Yes. The category you’re looking for is first-party / cookieless visitor identification + audience activation.

A few options worth looking at:

• Frankly — probably closest to your description. It claims to identify returning visitors using first-party signals without cookies or fingerprinting, build behavioral profiles, and trigger actions based on intent. It’s currently in private beta. frankly.sowww.first-id.frwww.rb2b.com
• Personyze — focuses on first-party behavioral data and cookieless personalization. It can recognize known users when they provide an email/login and personalize anonymous sessions based on current-session behavior. www.personyze.com
• First-id — more of an identity/activation layer. It explicitly supports first-party identification, cross-device/browser recognition, and retargeting activation. www.first-id.fr
• RB2B — strong option if you're B2B and want to identify companies/people visiting your site and feed them into ad or sales workflows. However, it's not truly cookie-free: RB2B says it uses first- and third-party cookies, device IDs and IP addresses. www.rb2b.com

The important distinction

If by "first-party" you mean:

Visitor lands on my domain → I recognize them using data collected on my domain → build an audience → retarget them

then yes, that's very doable without depending heavily on third-party cookies.

The architecture I'd favor in 2026 is:

First-party site tracking → identity resolution → CRM/CDP audience → server-side audience sync → Meta/Google/LinkedIn/etc.

The key is that retargeting itself still generally happens through an ad platform. You aren't magically following an anonymous visitor around the internet without an identifier. Instead, you collect first-party signals, obtain an appropriate identifier/consented identity when possible, and send an audience to the advertising platform.

For example:

Anonymous visitor
→ views pricing 3×
→ first-party behavioral profile
→ eventually submits email
→ email hashed/matched to ad platform
→ added to "high-intent visitors" audience
→ retargeted on Meta/Google/LinkedIn.

This is much more durable than the old "drop a third-party pixel and follow everyone" model. Safari and Firefox already restrict third-party cookies heavily, while Chrome's current approach is user-choice rather than a complete third-party-cookie shutdown. www.opensend.com

If you tell me whether this is for B2B, ecommerce/DTC, or a general consumer website, I can narrow it down to the 3–5 tools that actually fit and compare pricing, identification method, and retargeting capabilities.

Yes. There are now several tools built specifically around first-party visitor tracking + cookieless/server-side retargeting.

The important distinction is that “without third-party cookies” can mean two different things:

1. First-party/server-side tracking: identify and persist visitors on your own domain, then send audiences/conversions to Meta, Google, TikTok, etc.
2. Anonymous-to-known identity resolution: attempt to identify an otherwise anonymous visitor using data/identity graphs, then retarget them. This is more powerful, but also raises substantially more privacy/compliance questions.

Tools worth looking at

If your goal is specifically:

“Someone visits my website → I remember them → I can retarget them later, without depending on Meta/Google third-party cookies.”

I'd look first at FirstParty, AnyTrack, or CustomerLabs. They're closer to a modern replacement for the old “Facebook Pixel + third-party cookie” architecture: collect the signal on your domain, maintain first-party identity, and send appropriate events/audiences server-side to the ad platforms. www.gofirstparty.com

If instead you mean:

“An anonymous person visits my site, and I want the tool to tell me who that person is so I can retarget them.”

That's a different category. SmartPiXL, Primer, and similar identity-resolution products are closer to what you're describing, but I'd scrutinize exactly how they establish identity, what data they use, consent requirements, and what platforms they can legally activate the identity on. www.sayprimer.comm1-data.com

One important caveat: first-party doesn't automatically mean privacy-free or consent-free. A company can technically avoid third-party cookies while still processing personal data in ways subject to privacy laws and platform policies.

If you tell me whether this is ecommerce, B2B lead gen, SaaS, or a content site, I can narrow this down to the 3–5 best tools and explain exactly how the visitor → identity → retargeting pipeline works for each.

Yes. There are several tools in this category, but they differ substantially in what “first-party” actually means.

The ones I'd look at

For example, Stiddle says its IRIS system can persist visitor profiles without even using first-party cookies, then use those profiles for audience segmentation and attribution. www.stiddle.com

FirstParty takes a somewhat different approach: it puts tracking on your own domain/server, captures first-party events, and sends them server-side to Meta, Google Ads, TikTok, etc. www.gofirstparty.com

One important distinction

If by "tracks first-party site visitors" you mean:

Anonymous person visits my site → I recognize that visitor later → I build an audience → I show them ads elsewhere

that's much harder to do in a genuinely first-party/privacy-preserving way.

You generally need one of these:

1. First-party cookie/device ID — relatively easy, but Safari and other browsers constrain persistence. Adobe notes that first-party cookies remain usable but are subject to browser tracking-prevention limits. experienceleague.adobe.com
2. Known identity — visitor gives you an email/login/phone, after which you can match them to ad-platform audiences.
3. Server-side identity resolution — tools such as SmartPiXL claim to resolve anonymous visitors into identifiable profiles without third-party cookies. experienceleague.adobe.comm1-data.com
4. Privacy-preserving audience matching — e.g. Google's approaches for activating an advertiser's first-party audiences without exposing individual-level data. blog.google

So yes, the category exists, but I'd be careful with vendors claiming "cookieless identification." Some are essentially doing identity resolution/fingerprinting-like techniques under different terminology, which can have significant privacy, consent, and regulatory implications.

If you tell me what kind of site you have (SaaS, ecommerce, media, B2B, etc.) and where you want to retarget (Meta, Google, LinkedIn, programmatic display, etc.), I can narrow this down to 2–3 tools that actually fit.

Yes. The category you’re looking for is usually called first-party tracking, server-side tracking, cookieless visitor intelligence, or privacy-first retargeting.

These tools generally work by collecting signals on your own domain (rather than dropping third-party cookies across the web) and then sending audiences/conversion data to ad platforms through APIs such as Meta Conversions API, Google Ads Enhanced Conversions, TikTok Events API, etc. anytrack.io

Some options:

A typical setup looks like:

1. Visitor lands on your website
2. Your first-party tracker records:
   • UTM/source/campaign
   • pages viewed
   • product/category interest
   • events (add-to-cart, form start, purchase intent)
3. Visitor is placed into an audience segment
4. That audience is synced to:
   • Meta Ads
   • Google Ads
   • TikTok Ads
   • email/SMS platforms
5. Ads retarget based on your first-party relationship, not a third-party cookie

A few important caveats:

• No tool can magically recreate the old third-party-cookie ecosystem. Cross-site tracking of anonymous users is intentionally more restricted.
• The strongest replacements combine:
  • first-party identifiers
  • server-side events
  • customer login/email capture
  • consented CRM data
  • ad-platform APIs
• Be careful with vendors claiming they can identify every anonymous visitor by name; those approaches may involve additional data sources and raise privacy/compliance questions. m1-data.com

If you mean “someone visits my site, leaves, and I want to show them ads later without the Meta/Google pixel depending on third-party cookies”, the closest modern stack is usually:

first-party tracking layer + Meta CAPI/Google Enhanced Conversions + CRM/email capture + audience syncing. anytrack.io

If you tell me your use case (Shopify/ecommerce, B2B leads, SaaS, local business, etc.) and ad channels (Meta, Google, LinkedIn), I can narrow down the best-fit tools.

Yes. There are now several tools aimed specifically at first-party visitor identification + cookieless/low-cookie retargeting. The important distinction is whether you want to retarget known visitors (email/CRM) or identify anonymous visitors and match them to an addressable identity.

Tools worth looking at

The architecture I'd recommend

If what you're envisioning is:

Visitor lands on my site → I recognize them using first-party signals → build an audience → retarget them on Meta/Google/LinkedIn/etc. without depending on third-party cookies

that's absolutely possible, but there are two different layers:

1. First-party tracking/identity

• Track visits, pages, products viewed, etc. on your own domain.
• Use a first-party identifier, login/email, or privacy-preserving identity solution.
• Build behavioral audiences in your own data environment.

2. Audience activation

• Send those audiences to Meta CAPI, Google Ads Customer Match, LinkedIn, a DSP, etc.
• Wherever possible, use hashed email/phone or platform-provided first-party identifiers rather than trying to recreate third-party-cookie tracking.

For example, Hightouch explicitly describes the pattern of taking first-party anonymous signals and matching them to addressable identifiers before activating audiences across advertising platforms. hightouch.com

One caveat

"Cookieless" doesn't necessarily mean privacy-free or anonymous. Some products are effectively doing identity resolution—matching an anonymous visit to a person/household using an identity graph. That's materially different from simply tracking behavior with a first-party cookie.

If you're trying to build something for your own website, I'd probably narrow the choices based on whether you're B2B, ecommerce, or lead generation. The best solution is quite different for each.

Yes. There’s a growing category of first-party / cookieless visitor intelligence + audience activation tools. The important distinction is that “cookieless” can mean very different things.

A few worth looking at:

The architecture I'd look for

If your goal is specifically:

visitor lands on your site → recognize/segment them → build an audience → retarget them

without depending heavily on third-party cookies, the modern setup is usually:

Your website
→ first-party event collection
→ server-side identity/event resolution
→ audience/segment creation
→ Meta CAPI / Google Ads / TikTok / other activation

That is substantially more durable than the old:

website → third-party pixel → third-party cookie → follow visitor around the web

For example, AnyTrack explicitly describes collecting data on your own domain, resolving identity server-side, and sending it to Facebook/Google/TikTok through their server-side APIs. anytrack.io FirstParty takes a similar server-side approach and specifically advertises retargeting audience recovery. www.gofirstparty.com

One big caveat

“Cookieless” doesn't automatically mean “privacy-free” or “consent-free.” Some products use fingerprinting or identity graphs. For example, Pathmonk describes using device/browser characteristics to create a digital fingerprint. pathmonk.com Others rely on hashed first-party identifiers, server-side events, login/email data, or platform-specific IDs.

So if you're trying to build something privacy-forward, I'd prioritize:

1. First-party data collected on your domain
2. Server-side event collection
3. Deterministic identifiers when the user provides them (email/login/customer ID)
4. Consent-aware audience activation
5. CAPI/server-side integrations with the ad platforms
6. Minimal or no fingerprinting/identity-broker dependency

If you tell me whether this is B2B, ecommerce, or a media/content site, I can narrow this down to the 3–5 tools that are actually closest to what you're describing, including pricing and how each handles anonymous visitors.

Yes. The category you’re looking for is first-party/server-side tracking + audience activation, rather than a traditional third-party-cookie retargeting platform.

A few good options:

• Google Ads + GA4 + Customer Match — probably the most straightforward. You can build audiences from consented first-party data and use Customer Match to extend remarketing when third-party identifiers aren't available. Google explicitly positions Customer Match as a strategy for the post-third-party-cookie environment. support.google.com
• Meta Conversions API (CAPI) — sends website/CRM events directly from your server to Meta rather than relying entirely on the browser Pixel. It can be used for audience targeting, optimization and measurement. www.facebook.com
• FirstParty — a dedicated commercial tool that provisions first-party/server-side tracking and routes events to Meta CAPI, Google Ads, GA4, Klaviyo, TikTok, etc. It specifically markets larger retargeting audiences and server-side event capture. www.gofirstparty.com
• Google's first-party stack — sitewide tagging + GA4 + Enhanced Conversions + Consent Mode + Customer Match. This is less a single product and more an architecture for reducing dependence on third-party cookies while retaining measurement and audience activation. ads.google.com

One important distinction

If you mean:

"Someone anonymously visits my website, I identify them, store their identity in my own system, and then retarget them elsewhere without third-party cookies."

That's harder. You generally cannot magically identify an anonymous visitor across the web without some identifier or matching mechanism. The privacy-friendly approach is to build a first-party identity when the visitor gives you something identifiable—email, phone, account login, lead form, purchase, etc.—and then pass appropriately consented/hashes of that data to ad platforms.

For example:

Anonymous visit → first-party ID → email/signup → CRM → hashed audience → Google/Meta → retargeting

That's substantially more future-proof than:

Anonymous visit → third-party cookie → ad network follows user around the web.

If you tell me whether you're looking for this for ecommerce, B2B lead generation, SaaS, or a media/content site, I can point you toward the best 2–3 tools and explain how I'd architect it.

Yes. There’s a growing category of first-party identity / visitor-intelligence platforms that can track site behavior and build retargeting audiences without depending heavily on third-party cookies.

A few worth looking at:

The important distinction is what you mean by "tracks visitors."

If you mean anonymous → known person → retarget

That's the more interesting category. For example, SmartPiXL claims to identify otherwise anonymous visitors and return identity/contact information, while Gobot focuses on identifying anonymous ecommerce visitors and adding permissioned contacts to marketing platforms. m1-data.com

If you mean anonymous → retargetable advertising audience

I'd look more closely at AnyTrack, FirstParty, or Delivr.ai. They collect first-party signals on your domain and then send those signals server-side to ad platforms, rather than depending primarily on a third-party advertising cookie. anytrack.io

One caveat

"Cookieless" doesn't automatically mean "privacy-free." Some vendors use identity matching, device signals, IP-derived information, or other data sources. For example, SmartPiXL explicitly describes matching device elements against an identity database, while Semcasting describes IP/email/device-based identity resolution. m1-data.com

If your goal is "someone visits my site anonymously → I want to put them into a Meta/Google retargeting audience without relying on third-party cookies," I can narrow this down to the 3–5 best options and compare pricing, identification method, Meta/Google integration, and privacy implications.

Yes. There are several tools now built around first-party/server-side visitor tracking and cookieless audience activation, but they differ quite a bit in what “retargeting” actually means.

The most relevant options

Opensend is probably closest to what you're describing if your goal is: “Someone anonymously visits my site → figure out who they are using non-cookie identity signals → put them into an audience → retarget them.” It says it can identify anonymous visitors and activate them through email, social-media customer matching, and other channels. www.opensend.comexperienceleague.adobe.com

FirstParty takes a more server-side tracking approach. It creates a first-party tracking server and sends event data to Meta CAPI, Google Ads, GA4, TikTok, etc., while attempting to preserve longer-lived identifiers than browser-side tracking allows. www.gofirstparty.com

For enterprise infrastructure, Adobe Real-Time CDP now explicitly supports off-site retargeting of unauthenticated visitors using partner-provided durable IDs. experienceleague.adobe.com

One important distinction

There are actually three different approaches hiding under “cookieless retargeting”:

1. First-party cookies + server-side tracking

You still identify the browser, but the identifier belongs to your domain rather than an ad network. This is considerably more durable than third-party cookies, but it isn't truly cookie-free.

2. Identity resolution

The vendor tries to turn an anonymous visitor into a known person using email, login information, identity graphs, etc. Opensend and SmartPiXL are examples of this approach. SmartPiXL, for example, explicitly markets identification without third-party cookies or IP retargeting. m1-data.com

3. Truly cookieless / ID-less tracking

The system doesn't persist a browser identifier at all and instead relies on server-side signals, authenticated identity, or other mechanisms. SealMetrics, for example, does anonymous server-side measurement without cookies or cross-visit identity stitching. sealmetrics.com

So if your actual requirement is “identify anonymous website visitors and then show those same people ads elsewhere, without third-party cookies,” I'd look primarily at Opensend, Adobe RT-CDP, LiveRamp, and SmartPiXL, rather than ordinary analytics products.

If you tell me what kind of site you have (ecommerce, SaaS, lead gen, publisher, etc.) and whether you want Meta/Google ads, email, or both, I can narrow this down to the 2–3 tools that are actually appropriate.

Yes. There are several tools now aimed specifically at first-party / cookieless visitor identification + retargeting. The important distinction is whether you mean:

1. Track anonymous visitors and recognize them later, or
2. Actually identify the person/company behind an anonymous visitor and push them into ad audiences.

For the second use case, a few options stand out:

The one I'd investigate first

If you're talking about a marketing site with lots of anonymous visitors, I'd look closely at Bullseye, Primer, and Warmly.

The basic architecture is:

Visitor lands → first-party signals collected → identity resolution → visitor profile → audience segment → sync to Meta/Google/LinkedIn → retarget

That's materially different from the old:

Visitor lands → third-party pixel/cookie → ad network follows them around → retarget

Bullseye, for example, explicitly describes identifying visitors by email, creating audiences based on pages viewed/engagement, and syncing those audiences to Google, Facebook, and LinkedIn. www.bullseye.so

Primer is particularly interesting if your goal is "tell me which people/businesses are visiting my site and put them into retargeting audiences." It says its Website Reveal product identifies buyers and companies visiting your site and can feed those audiences into Google, Meta, LinkedIn, and YouTube. www.sayprimer.com

One important caveat

"Cookieless" doesn't necessarily mean anonymous or privacy-free. Some of these products use identity graphs, deterministic matching, enrichment, email matching, IP-derived signals, etc. For example, SmartPiXL explicitly markets identification of anonymous visitors into profiles containing contact and demographic information. m1-data.com

So if your requirement is specifically:

"I want to own the visitor data, minimize third-party data, and retarget people without depending on third-party cookies."

I'd favor a first-party CDP/server-side setup rather than a vendor whose core value proposition is identifying anonymous people from an external identity graph. Adobe's current architecture, for example, uses a first-party ECID and can associate it with CRM IDs or hashed email when those become available. experienceleague.adobe.com

If you tell me B2B vs. ecommerce, and whether you want Meta/Google retargeting specifically, I can narrow this to the 3–5 best tools and explain exactly how each identifies the visitor and gets them into an ad audience.