SenderSignal continuously watches 48 blacklists and reputation feeds, plus SPF, DKIM, DMARC and TLS. The instant your domain or sending IP is listed, we tell you, before it breaks your next campaign.
Round-the-clock monitoring across 48 blacklist and reputation sources, with rechecks as fast as every 15 minutes. The feed below shows how it looks in action.
Real alerts, real channels, real resolution - watch the full sequence from first detection to confirmed delisting, exactly as it plays out for your team.
Every signal your deliverability team chases, consolidated into a single, API-first surface. Hover any cell to see it come alive.
Continuous checks across 48 blacklists and reputation feeds, rechecked as fast as every 15 minutes.
HTTP, SMTP TLS, MX, SPF, DKIM, DMARC, the entire deliverability surface in one pane.
A documented REST API behind every screen, plus HMAC-signed webhooks that push ~60 alert event types anywhere.
$ curl https://api.sendersignal.com/v1/scan
-X POST \
-H "Authorization: Bearer $SS_KEY" \
-H "Content-Type: application/json" \
-d '{
"domain": "mail.acme.co",
"sources": "all"
}'{
"domain": "mail.acme.co",
"reputation": 94,
"listed": false,
"sources_checked": 150,
"sources_clean": 150,
"latency_ms": 47,
"checked_at": "2026-06-02T14:02:08Z"
}Build reputation on new domains, verify where mail actually lands, publish perfect DNS, and hand clients a report, every card below has its own deep-dive page.
Send a real test to our seed network and see the folder, per provider, with SPF/DKIM/DMARC as each receiver saw them.
Explore placement tests →Generate, live-verify and one-click publish SPF, DKIM and DMARC to Cloudflare, GoDaddy, Name.com or Dynadot, ESP-aware across a 51-provider catalog.
Explore guided DNS →Branded PDF/CSV reports and a weekly digest, white-label on Business, plus a public status page per workspace with your logo and colors.
Explore reporting →Pick yours. Same platform, same data - just the workflow, alerts, and reports that fit how you actually work.
A single dashboard with reputation, SPF/DKIM/DMARC, MX, and uptime. Slack the second something moves. PDF reports for the all-hands.
Our resolver network sweeps 48 blacklist and reputation sources around the clock, a listing anywhere in the world gets caught on your plan's cadence, down to every 15 minutes. No polling gaps, no “we'll check again tomorrow.”
A working preview of the SenderSignal app. Switch tabs to feel the speed.
Slack, email and HMAC-signed webhooks are live today, with PagerDuty, Microsoft Teams and Discord rolling out. Around 60 event types, plus routing rules, cooldowns and full delivery history. Pick a channel to see its payload.
The same Tuesday afternoon. The same domain. Watch what happens in 36 minutes against what happens in 6 days, both timelines, racing in parallel.
Every plan includes the full monitoring engine, paid plans add scale, integrations, and white-label.