Andreas Michael KelmMailStackr: DMARC & SPF Customer Service
- MailStackr: DMARC & SPF Customer Service
- MailStackr: DMARC & SPF App Comments & Reviews (2026)
- MailStackr: DMARC & SPF iPhone Images
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
MailStackr: DMARC & SPF App Comments & Reviews
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