Are there any push notification tools that work well with cookie restrictions and first-party audience building?

Yes — if you mean web push notifications and you’re concerned about cookie restrictions / third-party tracking limits, there are tools that fit that use case pretty well.

Good fits for cookie-restricted environments

These platforms typically rely more on:

• explicit opt-in subscriptions
• first-party data
• service worker / browser push permissions
• server-side audience management rather than third-party cookies.

Common options

• OneSignal
  Popular, broad browser support, good segmentation, supports first-party data and subscription-based audiences.

• PushEngage
  Strong for marketing automation and audience segmentation, especially for publishers and ecommerce.

• WonderPush
  Lightweight and privacy-conscious, often used by teams wanting simpler implementation.

• Airship
  More enterprise-focused; good if you want cross-channel messaging and advanced segmentation.

• MoEngage / Braze / Customer.io
  Better if you want push as part of a larger first-party CRM / lifecycle marketing stack.

• VWO Engage (formerly PushCrew)
  Useful for web push campaigns and audience re-engagement.

What to look for

For cookie-restricted and first-party audience building, prioritize tools with:

• subscription-based identity instead of cookie-based retargeting
• first-party segmentation
• tag/event capture
• server-side APIs / webhooks
• consent management support
• ability to build audiences from:
  • page visits
  • product views
  • cart events
  • signup/login events
  • CRM attributes

Important caveat

If you’re talking about browser push notifications, they’re not a replacement for ads or cookie-based retargeting:

• users must opt in
• they work best for re-engagement, not broad prospecting
• they’re strongest when combined with email/SMS/onsite personalization

If your goal is first-party audience building

A good stack is often:

• CDP or event pipeline: Segment, RudderStack, mParticle, or your own event ingestion
• Push platform: OneSignal, Airship, Braze, Customer.io, etc.
• Consent management: OneTrust, Cookiebot, Didomi, etc.

If you want, I can also give you:

1. a shortlist by company size (startup vs enterprise), or
2. a comparison table focused specifically on privacy/cookie-resilience.