Postmark DMARC

Postmark DMARC is the lightweight DMARC monitoring service attached to Postmark. The free version turns aggregate reports into weekly email digests. DMARC Digests adds a dashboard, more source detail, longer history, user management, and a paid per-domain plan.

A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.

Against trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, Postmark DMARC covers event stream, and does not cover multi-tenant support, the suppressions API, scheduling, and webhook coverage. Whether that gap matters depends on how central those are to the build.

• Multi-tenant: No
• Event stream: Yes
• Suppressions API: No
• Operating since: Not published
• Scheduling: No
• Best published rate per 1,000: Tiers not published in comparable form
• Deliverability: Not a sender. Best used to monitor DMARC alignment and identify unauthorized or misconfigured mail sources.
• Webhooks: No
• Starts at: $14/mo per domain for DMARC Digests

Not a sender. Best used to monitor DMARC alignment and identify unauthorized or misconfigured mail sources.

Teams that need simple DMARC monitoring without adopting a larger security platform.

Agencies and security teams that need multi-tenant dashboards or enforcement workflows.