What is Notification Harbor?

Notification Harbor is an AI-native email platform designed for product teams who treat email like a service. It allows users to describe campaigns in plain English, and the platform generates copy, personalizes each email based on recipient engagement history, and deploys in under 30 seconds. It is API-first, with SDKs in multiple languages, and offers features like send-time intelligence, behavioral triggers, and CRM bidirectional sync.

How to use Notification Harbor?

1. Open a campaign and type a brief in English, specifying audience, tone, goal, and things to avoid. 2. Harbor generates 3-5 subject lines, an inbox-optimized preheader, and per-segment body variants for you to review and edit. 3. Click 'Dock' to ship: Harbor rehearses the send against a test slice, validates inbox placement, and rolls out at send-time intelligence-optimized pacing. You can also use the API directly to send transactional emails or set up behavioral campaigns.

Core features of Notification Harbor

Plain English campaigns: Describe what you want to send; Harbor writes it, segments it, and ships it.
Real-time personalization: Each recipient gets a unique email (subject, hero copy, CTA, send time) generated at queue time using their engagement history.
Send-time intelligence: Predicts the 15-minute window each recipient is most likely to open.
Multi-variant testing: A/B/n testing on subject lines, preheaders, hero copy, CTA placement with Bayesian winners.
Behavioral triggers: Trigger sends from any event in your stack (Segment, Rudderstack, custom webhook, Postgres CDC).
CRM bidirectional sync: Sync with HubSpot, Salesforce, Attio, custom Postgres.
Observability built in: Every send is a trace; deliverability per-domain, per-template; plug into Datadog, Honeycomb, Grafana.
API-first with SDKs in 6 languages: Node, Python, Go, Rust, Elixir, Ruby.