MailStackr: DMARC & SPF

DKIM · DNS · Email Security

Only for Mac

$14.99

Mac

Turn DMARC aggregate reports into clear insights. See who sends on behalf of your domain — and fix it directly from your Mac. MailStackr reads DMARC aggregate reports from your IMAP inbox and turns raw XML into a clear, actionable dashboard — natively on your Mac. WHAT IT DOES • Connects to any IMAP inbox where DMARC reports land and syncs automatically in the background • Parses and stores all reports locally in SQLite — nothing leaves your Mac • Shows per-domain health at a glance: DKIM and SPF pass rates over the last 90 days • Detects problems automatically: missing SPF entries, DKIM failures, suspicious sending sources, unknown mail services • Distinguishes between misconfigurations and actual spoofing attempts • Suggests exact DNS record fixes — apply them with one click via the Cloudflare API, or copy them to your clipboard • Live DNS lookup: see your current SPF and DMARC records directly in the app, edit them inline • DKIM key check: verifies that your selector actually exists in DNS • Full-text search across all reports and domains • Export any report as PDF or CSV NO SUBSCRIPTION. NO CLOUD. NO NONSENSE. MailStackr is a native Mac app. All data stays local. There is no backend, no account, no usage limit. Buy once, use forever. BUILT FOR PEOPLE WHO RUN THEIR OWN MAIL If you manage Postfix, Rspamd, Exim, or any other mail server, DMARC reports pile up fast. MailStackr is the tool that finally makes them readable — without having to pay a monthly fee to a SaaS dashboard that shows you less than the raw XML. REQUIREMENTS • macOS 14 or later • An IMAP inbox that receives DMARC aggregate reports (rua= address) • Optional: Cloudflare API token for one-click DNS edits

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The developer, Andreas Michael Kelm, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    Information

    Seller
    Andreas Michael Kelm
    Size
    5.2 MB
    Category
    Productivity
    Compatibility
    Requires macOS 26.4 or later.
    • Mac
      Requires macOS 26.4 or later.
    Languages
    English and German
    Age Rating
    4+
    Copyright
    © Andreas Kelm
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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