SendWatch
24/7 watchdog for cold-email infrastructure: SPF, DKIM, DMARC, blocklists, and DMARC reports, watched around the clock and written up in plain English. Since May 2025, Microsoft rejects unauthenticated high-volume mail outright (550 5.7.515). Google and Yahoo have enforced authentication since Feb 2024.
Scan the domain you actually send from, often a subdomain like mail.youragency.com, not your main website.
We check: SPF record + lookup limit · DKIM selectors · DMARC policy + reporting · MX/MTA-STS/TLS-RPT · listings on the blocklists named on our method page. We don't promise inbox placement. Nobody honestly can. We make the measurable failures visible.
| Operator $99/mo | Agency $249/mo | |
|---|---|---|
| Domains | 10 | 40 |
| Daily auth + blocklist checks | ✓ | ✓ |
| DMARC report ingestion | ✓ | ✓ |
| Same-day drift alerts | ✓ | ✓ |
| Monday plain-English digest | ✓ | ✓ |
| Client grouping + forwardable reports | no | ✓ |
The Agency plan is your domain-operations layer: every client sending domain watched, with a forwardable per-client health report you can send as proof.
14-day free trial, card required. Cancel anytime, self-serve. 30-day money-back guarantee: if SendWatch is not a fit, or if we ever fail to flag a deliverability problem before your email provider does, your first paid month is refunded in full, no questions asked. One blacklisted sending domain can cost an agency a client retainer ($2,000 to $5,000 a month). SendWatch is $99 to $249 a month, flat. Founding cohort open: early accounts lock launch pricing for the life of the subscription. Start trial, Operator $99/moAgency $249/mo.
Blue Star Marketing Firm LLC · 2929 Vista Blvd, #51371, Sparks, NV 89434 · support@sendwatch.bluestarmarketingfirm.com · Built by a small team; monitoring is automated and support is answered with AI assistance under human review. · Terms · Privacy · Refunds · Method · Citations: Microsoft Tech Community (May 2025 sender requirements); Google/Yahoo sender guidelines.