Event-Driven Email Operations
Stop polling dashboards for delivery updates. Push accepted, delivered, bounced, and complaint events directly to your application and workflows.
Use webhooks to synchronize product state, trigger retries, alert teams, and keep customer status accurate.
Webhook Capabilities
Webhooks turn email from a black box into an event stream your product can reason about in real time.
Delivery State Sync
Update user-facing status as messages move from accepted to delivered or bounced.
Failure Automation
Trigger retry paths and internal alerts when transient or permanent failures are detected.
Reputation Protection
Handle complaint and bounce events automatically to keep bad addresses out of future sends.
Workflow Integrations
Feed events into CRM, data warehouse, queue workers, and incident response systems.
Signature Verification
Validate incoming webhook signatures so only trusted Sendarix events are processed.
Retry-Safe Consumers
Design idempotent handlers that safely process duplicate deliveries and delayed events.
Webhook Lifecycle
A straightforward flow for building reliable event-driven automations.
1. Send Message
Message enters the delivery pipeline through API or SMTP.
2. Event Generated
Delivery system creates status events (accepted, delivered, bounced, complained).
3. Webhook Delivered
Events are posted to your endpoint for immediate processing.
4. App Reacts
Your systems update user state, trigger jobs, or notify teams automatically.
Most Common Implementations
Customer timeline updates, notification retries, compliance logging, support dashboards, and CRM engagement sync.
Recommended Pairing
Use with Email API for event-driven product logic and Email Analytics for cross-stream performance review.
Frequently Asked Questions
Can webhooks replace polling completely?
For most event-driven workflows, yes. Teams still use analytics for historical analysis and reporting.
Which events are most important to start with?
Start with delivered, bounced, and complained. Then expand to engagement or custom workflow events.
Are webhooks only for large systems?
No. Even small apps benefit from immediate state sync and reduced manual support debugging.
How should we verify webhook requests are genuine?
Use shared secrets, signatures, or HMAC headers where provided, validate timestamps to block replays, and reject payloads that fail checks before updating production state.
What if our endpoint is down when a webhook fires?
Rely on retry policies and make handlers idempotent. Log received event IDs so duplicates from retries do not corrupt your database or user notifications.
Should webhook processing happen synchronously in the HTTP request?
Usually no. Acknowledge quickly, enqueue work to a job runner, and process asynchronously so slow tasks do not cause timeouts and unnecessary retries.
Can we fan out the same event to multiple internal services?
Yes, via a message bus or router. Keep a single ingress that validates and normalizes payloads, then distribute to billing, CRM, data warehouse, or alerting consumers.
How do webhooks help with bounce and complaint handling?
They let you update suppression lists, pause risky campaigns, or flag accounts in near real time instead of discovering problems hours later through support tickets.
Do we need separate webhook URLs for staging and production?
Strongly recommended. Isolated endpoints prevent test events from touching live user data and make it easier to rotate credentials independently.
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