Persistent monitors with schedule and next-run state
Create a monitor per sender domain, keep scheduled runs active, and see when the next check will execute without rebuilding the workflow each time.
Sender posture monitoring
Watch domain health before trust slips
Use MailSlurp domain monitoring to catch SPF, DKIM, DMARC, MX, and sender-auth regressions before they damage inbox placement or customer trust.
Trusted by teams shipping customer messaging
Product features
Domain monitor capabilities teams can run every day
Keep sender posture visible with persistent monitors, scored runs, readable summaries, and alert-ready outputs.
Health-scored runs for SPF, DMARC, enforced DMARC, and MX
Every run scores the baseline checks that matter most for sender posture and clearly flags missing SPF, missing DMARC, weak DMARC policy, or broken inbound routing.
Summary snapshots with trend and attention signals
Domain monitor summaries combine current monitor state, the latest run result, trend insights, and auth findings into one view teams can review quickly.
On-demand reruns and alert sinks after DNS changes
Re-run checks immediately after provider cutovers or DNS edits, then route degraded results into webhooks or operational alerting for fast remediation.
Domain monitor
Key workflows
DNS, provider, and policy changes can silently erode trust. Continuous checks keep SPF, DKIM, DMARC, MX, and sender posture visible before placement slips or customers feel the fallout.
Workflow 01
Run authentication and delivery checks from code
Fold domain checks into release gates, scheduled jobs, or internal reliability workflows instead of relying on manual audits.
Workflow 02
Give engineering and lifecycle teams one monitoring surface
Route domain health results into the same reliability view used for campaign readiness and launch review.
Workflow 03
Catch sender drift before it becomes a delivery problem
Pair domain checks with verification and pre-send QA so high-risk changes do not reach customers unnoticed.
Developer integration
Automate domain checks, alerts, and message signals with APIs
Move sender posture checks and reliability events into scheduled jobs, dashboards, or alert pipelines with the same API surface.
- Webhook-ready event handoff
- Programmatic domain and signal checks
- Shared evidence across engineering and lifecycle teams
Next step
Start with signup or docs
Use the free account to validate the workflow in your own stack, then move into implementation details in the docs.