Domain-auth monitoring
Track DMARC, SPF, DKIM, MX, and related sender records across domains and change windows.
Open DMARC monitoring
MailSlurp helps teams watch domain-auth posture, sender-health drift, inbox placement, and campaign readiness with scheduled and on-demand checks.
Trusted by top companies worldwide




Monitor SPF, DKIM, DMARC, MX, and related records so configuration drift is visible before it becomes a customer-facing delivery problem.

Give engineering, security, compliance, lifecycle, and campaign owners the detail they need to remediate sender-health failures quickly.
Use monitoring that connects detection, ownership, and follow-up instead of leaving sender health as a one-off DNS lookup.
Track DMARC, SPF, DKIM, MX, and related sender records across domains and change windows.
Open DMARC monitoringValidate posture immediately after DNS edits, provider cutovers, deployments, and launch preparation.
Pair monitoring with rendering, link, asset, and template QA before important sends.
Open campaign QAUse summaries and issue counts so teams can understand what failed and what changed between runs.
Send monitoring failures to the team that can actually change the outcome.
Jump from monitoring into DMARC, SPF, DKIM, header, and inbox-placement investigation tools.
Open toolsIntegrate MailSlurp Seamlessly
Official plugins and SDKs for all major programming languages, frameworks, and test platforms. All functionality available via API or dashboard.

MailSlurp fits right into your existing development, testing, and CI/CD workflows. Deploy and iterate with confidence and actionable feedback.
Emails processed
500 million+
Infrastructure that scales.
Mobile networks
20+
Leverage global telecom networks.
Mature platform
10+ years
Stable and dependable.