Know when your email deliverability breaks. Before you lose your revenue.
SenderSonar continuously monitors your DNS, blocklists, DMARC reports, and bounce logs 24/7. Get smart alerts paired with exact copy-paste solutions to fix mail flow immediately.
No more guessing.We monitor all signals and give you clear answers and solutions.
include:sendgrid.net added nested DNS lookups, breaking RFC 7208 compliance (11/10).198.51.100.12 sent 1,420 spoofed messages failing DMARC alignment.p=none to p=reject to block spoofing.550 5.7.26 DKIM authentication failed for domain sendersonar.com.550 5.7.1 Service unavailable; Client host [192.0.2.45] blocked by TrendMicro RBL.mail.sendersonar.com& submit delisting request via TrendMicro portal.Authentication & DNS Drift
Know your email authentication is correct and get notified the second third-party providers change your records.
- •SPF validation, syntax check & 10-lookup limit expansion tree.
- •DKIM selector discovery, validity & CNAME chain health.
- •DMARC validation, policy drift & Gmail/Yahoo bulk-sender scorecard.
- •Plain-language findings with copy-paste corrected DNS records.
Impact-Tiered Blocklist Monitoring
Monitor IP and domain reputation across blocklists that actually matter, eliminating noise from irrelevant lists.
- •Separates Spamhaus-class high-impact lists from low-signal ones.
- •Instant alerts on new listings and automatic delisting confirmation.
- •Curated step-by-step delisting playbooks for every major RBL.
- •Bulk import for all your sending IPs and client domains.
Root-Cause Bounce Diagnosis
Stop guessing why mail failed. Turn cryptic SMTP server rejections into clear, actionable root-cause explanations.
- •Classifies bounces by hard, temporary, policy, reputation, or block.
- •Displays exact rejection text returned per receiving provider.
- •Correlates bounce spikes with live blocklist & DNS state changes.
- •Preserves and decodes failure evidence that ESPs discard.
Grouped Alert Incidents
Receive one actionable alert per incident instead of getting spammed by forty separate symptom notifications.
- •Customizable rules for DNS drift, blocklist hits & threshold breaches.
- •Alert delivery via Email, Slack, and generic Webhooks.
- •Groups related signals into unified incidents with timeline history.
- •Incidents automatically resolve when underlying issues clear.
Transparent Domain Health Score
A single composite domain health score you can trust because it transparently explains how it was calculated.
- •Composite score aggregating authentication & blocklist signals.
- •Itemized breakdown showing exactly what raised or lowered your score.
- •Complete score history and trend charts from day one.
DMARC Report Analytics
See exactly who is sending email as your domain with automated parsing of DMARC aggregate (RUA) reports.
- •Classifies sending sources: ESPs, forwarders, or spoofing attempts.
- •Compliance dashboard showing share of mail passing alignment.
- •Alerts on newly-seen sending sources and spoofing activity.
- •Guidance to move safely from p=none to enforcement (p=reject).
Stop losing revenue to silent deliverability failures.
Get notified the second your DNS drifts, your domain hits a blocklist, or mail bounces spike.