Email Deliverability Monitor

Replaces a $65k SDR's wasted hours. Watches SPF/DKIM/DMARC daily, alerts before bounces.

The Problem

An SMB owner spends $65k/yr on an SDR running outbound — but the moment their sending domain's SPF/DKIM/DMARC drifts (DNS edit, new ESP, expired DKIM key), inbox placement collapses and sequences silently fail. By the time the SDR notices the reply rate dropped to 0%, two weeks of pipeline are gone.

The Outcome

Daily cron fires → agent scans every operator-owned sending domain (primary + lookalikes) for SPF/DKIM/DMARC/BIMI alignment → diffs against last week → flags broken records, expired keys, missing DMARC, or DNS drift to Slack with the exact zone-file fix. Catches deliverability collapse the same day, not the same fortnight.

Day in the Life

Mon 6am: scans 8 sending domains → finds DKIM selector google._domainkey on bestrevops.co returns NXDOMAIN → posts Slack #deliverability with copy-paste TXT record

Wed 6am: detects DMARC policy on signalaeo.com flipped from p=none to p=quarantine → flags p=reject upgrade path

Fri 5pm: weekly digest — SPF includes count, DMARC alignment %, DKIM key age, BIMI eligibility, predicted inbox placement trend

Deploy Specs

Runtime

python

Pattern

api-shim

Tier

light

Setup Time

instant

Required Env Vars

ANTHROPIC_API_KEYSLACK_BOT_TOKEN

Integrations

DNS (any registrar)SlackSmartleadInstantly

GitHub Source

Repository

globalcyberalliance/domain-security-scanner

Stars

173

License

Apache-2.0

Last Commit

2026-04-12

Replace

SDR

$65,000/yr

AgentDepot

$299/month

Save $61,412/yr · 18.1x cheaper

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