RelayIt gives product teams a programmable pipe for email observability and action. Watch messages move, turn them into events, and send the right context to your APIs, webhooks, or agents.
Observe the flow
Every message becomes a clear event.
Trigger action
Route handoffs to APIs, webhooks, and agents.
Keep control
Replay, inspect, and recover from one place.
Relay
Events from the relay pipe, ready for your product to inspect, replay, or act on.
API key
rl_live_8A2Q
Webhook
Enabled
Relay events
48 / 7d
Destination
Webhook endpoint
https://api.northline.app/relay
Inbound received
agents.northline.app
Reply forwarded
api.northline.app
Processing failed
api.northline.app
Platform
RelayIt manages the email relay path with Mailgun under the hood, then gives your product the layer it needs: identities, events, webhooks, replay, and a clear view of every handoff.
Relay identities
2 active identities
support
replies@northline.app
agent-triage
agents@northline.app
Destination emails
Verified inboxes for handoffs and review.
Static sample from the Relay identities screen
Create routing identities for every workflow. Keep the real inbox private.
Workflow
Step 01
Set the relay identities and destinations that make each product workflow observable.
Step 02
Point the relay pipe at your API, webhook worker, or agent endpoint. Choose the events that matter.
Step 03
Review threads. Watch relay health. Replay missed events. Trigger the next action.
API sketch
POST /v1/relay-events
{
"identity": "support",
"destination": "https://api.company.com/relay",
"events": ["INBOUND_RECEIVED"]
}
Response
webhook destination enabled
Agent workflows
Observe inbound messages, hand context to an agent, and route the result through a trusted identity.
Internal APIs
Turn relayed replies into events that update tickets, notify teams, and enrich records.
Product workflows
Keep both sides private while your product observes and controls the conversation.
Pricing
RelayIt is priced around what passes through the relay: observed messages, webhook delivery, event history, and the controls your team needs around them.
$0
No credit card required
A simple way to try the relay layer with managed routing.
Managed relayit.sh domain
1 admin seat
7 days of audit history
10 AI credits included (coming soon)
100 emails each week
Pricing available on request
per month
Your first production relay loop for real product traffic.
1 custom relay domain
1 admin plus unlimited members
Standard support
1 month of audit history
500 AI credits included (coming soon)
100 emails per day
Pricing available on request
per month
More observed flow, more history, and more room for teams and agents.
1 custom relay domain
Unlimited admins and members
Priority support
3 months of audit history
3,000 AI credits included (coming soon)
1,000 emails per day
Pricing available on request
volume-based rollout
Designed for multi-brand, high-volume, and regulated relay programs.
Multiple custom relay domains
Unlimited admins and members
Priority support and architecture review
Extended audit retention
Custom AI credit allocation (coming soon)
Custom email throughput and SLA planning
Ready to ship
Add observability, routing, replay, and action hooks for the APIs, webhooks, and agents behind your product.