Scheduled checks
SPF, DMARC, DKIM, MX
Run recurring checks so drift is detected without manual audits or one-off spreadsheet reviews.
Monitor sender and domain health before it impacts inboxing
MailSlurp Domain Monitor runs SPF, DMARC, DKIM, and MX checks on a schedule or on demand so teams catch sender regressions before campaigns, releases, migrations, and critical product email degrade.
Manual runs
Fast incident triage
Trigger on-demand scans when DNS or infrastructure changes go live.
Alert sinks
Route to owners
Send actionable alerts and run history to team channels so issues are owned and resolved.
Run history
Track drift over time
Compare outcomes before and after changes to prevent repeat incidents.
Core capabilities
What teams need when email workflows matter
Monitor SPF, DMARC, and MX health on a schedule
Keep a recurring baseline across your sender domains so authentication posture is never a surprise.
- SPF
- DMARC
- MX checks
Run on demand after DNS and provider changes
Validate changes immediately instead of waiting for a campaign or release to reveal regressions.
- Manual runs
- Change windows
- Fast feedback
Route alerts to the right people
Send low-noise alerts with clear next actions so marketing ops, platform owners, and compliance stakeholders can fix issues quickly.
- Alerting
- Ownership
- Incident response
Use run history as evidence and a reliability KPI
Track outcomes across domains and environments to prove posture improvements and reduce repeat incidents.
- Run history
- Trends
- Governance
Team use cases
How engineering, QA, and operations teams use MailSlurp
Deliverability + email ops
Prevent auth drift from breaking inbox placement
Catch DNS regressions early and keep sender posture stable during ongoing template and infra changes.
- Detect DMARC and SPF drift quickly
- Reduce spam-folder risk after changes
- Assign clear ownership for fixes
Platform and SRE teams
Use scheduled checks as release gates
Treat sender posture like production infrastructure with repeatable checks and incident workflows.
- Validate changes during maintenance windows
- Reduce time-to-diagnosis during incidents
- Create a stable baseline across environments
Agencies and multi-brand operators
Monitor multiple domains without spreadsheet chaos
Track posture across brands and subdomains with run history and consistent reporting.
- Centralize domain posture visibility
- Standardize reporting and handoffs
- Spot high-risk domains before launches
Getting started
Get this working quickly, then build on it
Day 1
Create a monitor for one sending domain
Start with one high-impact domain and run a baseline so teams know the current posture.
- Add the domain you send from most often
- Run a baseline check and review results
- Record owners for DNS and sending changes
Week 1
Schedule checks and route alerts
Turn posture into a repeatable workflow by running checks on a cadence and routing alerts.
- Enable scheduled checks for the domain
- Connect alert sinks for owners
- Agree on pass/fail thresholds for release
Week 2+
Expand across domains and environments
Scale posture checks across production and staging so drift is caught before launches.
- Add subdomains and secondary sender identities
- Review trends during weekly ops reporting
- Pair with deliverability tests for core workflows
Team fit
How different teams get value
Deliverability owners
Challenge: DNS and sender-auth drift often shows up only after inbox placement drops.
What improves: Detect drift early and route alerts with clear ownership for fixes.
Marketing ops teams
Challenge: Launch risk increases when sender posture changes are not monitored continuously.
What improves: Ship campaigns with confidence that sender posture is stable.
Platform teams
Challenge: Incidents take too long when DNS posture is checked ad hoc and inconsistently.
What improves: Standardize posture checks as part of incident response and release gates.
Customer outcomes
What gets better once MailSlurp is in place
Earlier detection
Catch posture drift before it impacts conversions and support volume.
Faster remediation
Route alerts to owners with actionable context and run history.
Repeatable operations
Turn DNS posture into a schedule-driven workflow, not a one-off audit.
Clear measurement
Track posture trends over time as a reliability KPI for sender identity health.
Ready to try this with your own workflow?
FAQ
Questions people ask before they start
What does domain monitor check?
Domain monitor focuses on scheduled and on-demand SPF, DMARC, and MX checks so teams can catch DNS regressions early.
Does this replace DMARC report analytics tools?
Many teams use posture monitoring alongside DMARC aggregate report tooling. Domain monitor is best for drift detection, alerting, and operational readiness.
Can we use this as part of release gates?
Yes. Treat sender posture like production infrastructure by scheduling checks and requiring a passing baseline before launches.
How should we connect this to inbox testing?
Use domain monitor to keep DNS posture healthy, then pair it with deliverability monitoring workflows and targeted inbox testing for your critical sends.