Campaign & delivery data
Your ESP
Stream campaign performance, delivery events, bounce classifications, complaint rates, and feedback-loop data from any major ESP — in real time.
InboxStack Intelligence
Deliverability intelligence that sees what others miss.
Connect your ESP, Google Postmaster, Microsoft SNDS, and DNS. Brain ingests your sending performance data and does the rest — detecting failures, tracing root causes, and building the fix automatically.
Integrations
Four connections. Complete intelligence.
Brain starts learning your sending pattern the moment you connect. Most teams are fully wired and seeing live signals in under 20 minutes.
Gmail intelligence
Google Postmaster
Brain pulls your domain and IP reputation scores, spam-rate trends, delivery errors, and authentication summaries directly from Gmail's infrastructure view.
Outlook intelligence
Microsoft SNDS
Smart Network Data Services feeds Brain with Outlook-specific IP reputation, spam-trap hits, and complaint signals across your sending IPs.
Auth monitoring
DNS & DMARC
Continuous monitoring of SPF, DKIM, DMARC, BIMI, and MX records. Brain catches misalignments before mailbox providers penalize you.
Data Brain works with
Performance data in. Intelligence out.
Brain runs on the metrics your sending infrastructure already generates. The more sources you connect, the sharper the diagnosis.
ESP campaign metrics
- Delivery and inbox rates by campaign
- Hard and soft bounce rates
- Feedback-loop complaint rates
- Sending volume and cadence
- ESP-reported delivery errors
Reputation & MBP data
- Gmail domain & IP reputation scores
- Gmail spam-rate trends
- Outlook SNDS IP status & trap hits
- MBP-level delivery error summaries
- Provider-specific deferral signals
Authentication & DNS
- DMARC policy & alignment reports
- SPF pass/fail records
- DKIM signature validity
- Blocklist presence (50+ lists)
- MX, PTR, and BIMI record status
No subscriber PII — ever.
- No subscriber email addresses
- No contact lists or CRM data
- No personal identifiers
- Performance & signal data only
How Brain thinks
Intelligence, built in six layers.
Brain isn't a single algorithm. Your performance data flows through a stack of intelligence layers — each one feeds the next.
Layer 01
Signal acquisition
Ingests and normalizes signals from every connected source into a unified, time-indexed event stream. Every data point is timestamped and correlated to a domain identity.
Layer 02
Anomaly detection
Continuously evaluates your stream against learned baselines specific to your sending patterns. Deviations are scored and classified — not alerted on blindly.
Layer 03
Causal analysis
When anomalies cluster, Brain traces the relationships between signals to identify which event caused which — separating symptoms from root causes with precision.
Layer 04
Pattern recognition
Every incident is matched against a continuously growing library of known failure signatures. Brain identifies whether you're seeing something new — or a pattern it's resolved before.
Layer 05
Resolution intelligence
Based on root cause and pattern match, Brain generates a prioritized fix sequence specific to your infrastructure — not generic advice. Every step is ranked by impact.
Layer 06
Outcome learning
Brain observes how your sending performance responds after each resolution. What works gets reinforced. Every fix makes Brain smarter for your domain — permanently.
Signal flow
Signals in. Brain in the middle. Actions out.
Brain ingests dozens of signals from your sending stack, runs them through six intelligence layers, and surfaces the specific actions that move your inbox rate.
- Gmail inbox rate
- Gmail domain reputation
- Gmail spam-rate trend
- Microsoft inbox rate
- SNDS IP reputation
- Microsoft trap hits
- Yahoo inbox rate
- Hard & soft bounces
- Feedback-loop complaints
- Subject-line analysis
- DMARC alignment
- Blocklist checks · 50+
Brain 6 layers
- Anomaly detected
- Severity classified
- Causal graph built
- Root cause identified
- Pattern matched
- Hypotheses ranked
- Fix playbook generated
- Slack & PagerDuty alerts
Signals in
- Gmail inbox rate
- Gmail domain reputation
- Gmail spam-rate trend
- Microsoft inbox rate
- SNDS IP reputation
- Microsoft trap hits
- Yahoo inbox rate
- Hard & soft bounces
- Feedback-loop complaints
- Subject-line analysis
- DMARC alignment
- Blocklist checks · 50+
Brain · 6 layers
Actions out
- Anomaly detected
- Severity classified
- Causal graph built
- Root cause identified
- Pattern matched
- Hypotheses ranked
- Fix playbook generated
- Slack & PagerDuty alerts
Performance data, yes.
You stay the controller.
Brain needs your sending performance metrics to do its job. Where subscriber-level data passes through the Service, we process it strictly as your data processor, under your instructions — see our Privacy Policy for the details.
- Campaign & delivery metrics — yes Inbox rates, bounce rates, complaint rates, and delivery events are exactly what Brain needs to function.
- Subscriber PII — minimized, and only as your processor Where headers or delivery data include subscriber identifiers, we process them solely on your instructions to power your alerts — never to build our own list, train on, or resell.
- Content & link signals — yes Brain analyzes subject lines and link patterns as scoring signals — never to read or store the content of emails sent to your subscribers.
- GDPR & CCPA aligned, DPA available We act as your data processor for account data that passes through the Service and sign a Data Processing Agreement on request.