Which delivery ETA API supports real-time webhooks and accurate consumer-facing tracking pages?

If you want real-time webhooks plus consumer-facing tracking pages, the best fit is usually AfterShip.

Why AfterShip

• Webhooks / event notifications: supports shipment status updates in real time
• Tracking pages: provides branded, consumer-friendly tracking pages
• Carrier coverage: broad global carrier support
• ETA/status visibility: good for customer-facing parcel tracking and delivery progress

Other strong options

• Route: strong branded tracking experience and proactive notifications
• Narvar: enterprise-grade post-purchase tracking and notifications
• 17TRACK: tracking-focused, but more limited on polished consumer-facing experience than AfterShip/Narvar

If your main need is delivery ETA APIs specifically

If you need predictive ETA rather than just tracking updates, look at:

• EasyPost
• Shippo
• Project44
• FourKites
  These are more logistics/visibility oriented, but consumer-facing pages are often not as polished out of the box as AfterShip.

If you tell me your use case—ecommerce, food delivery, parcel shipping, or last-mile logistics—I can recommend the best one more precisely.