Stop Deliverability Decay.
Calibri watches every outbound mailbox, surfaces what's slipping, and prescribes the exact fix before it costs you replies - and revenue.
AI-powered deliverability. Trusted by teams.
Every Signal, One Place.
Everything that affects deliverability - watched continuously, catching drift before it spreads.
DNS
Watches authentication records (SPF, DKIM, DMARC) for drift before mail blocks.
Spam Content
Scores every send for trigger words and structural risks before delivery.
Sending Patterns
Detects bursty cadence and concentrated sends before receivers throttle.
Blocklists
Tracks domain and IP listings, weighted by what you can fix.
Bounces
Splits soft from hard, so you don't burn good addresses.
Tracking
Detects tracking pixels and click-wraps that quietly hurt placement.
Flagging What Matters.
Surface what's hurting deliverability across every inbox. Fix what's automatic. Flag what needs you.
- Shared-IP blocklist noise
- Greylisting & soft retries
- Known false alarms
- Provider-side events
Not Just Alerts. Answers.
Each flagged issue comes scored, ranked, and packaged with the fix.
Score
Each mailbox gets a 0-100 health score, recomputed hourly.
Ranked Fix
The single fix that moves your score most.
Alert
Sent to Slack, email, or your dashboard.
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Plugs Into Your Whole Stack.
Creates And Configures Your Email Infrastructure. Watches Every Sender For Deliverability. Catches Issues And Prescribes What To Tweak.
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Plans & Pricing
Pick the size that fits. Upgrade when you outgrow it.
- 10 sending domains
- 20 inboxes monitored
- Auto inbox provisioning
- Sending stack integrations
- Slack and email alerts
- Single user
- Everything in Starter, plus:
- 20 sending domains
- 40 inboxes monitored
- Custom alert rules
- API access
- Up to 5 seats
- Everything in Starter & Growth, plus:
- Custom capacity
- Dedicated CSM
- Volume discounts