Encryption at Rest
Payloads are encrypted at rest with AES-256-GCM and decrypted only in memory, exactly at fire time.
Reliability & transparency
We hide nothing
Trust and money are on the line, so we describe our reliability in honest, verifiable terms — and publish the real numbers instead of promising them.
Reliability & Security
Because trust and money are on the line
Verifiable fundamentals instead of flashy promises — described only in honest terms.
HMAC signing · key rotation
Every outgoing webhook carries an X-SendIt-Signature header — verify it in one line, and rotate signing secrets with zero downtime.
Automatic retries · DLQ
Up to five retries with exponential backoff; once exhausted, the job is safely isolated in a Dead Letter Queue.
SSRF protection
DNS is re-resolved just before firing to block private and metadata IPs, and redirects are never followed.
Punctuality
Measured, not promised
We record the actual fire time against the scheduled time on every send, then publish the real numbers. Second-level delivery with Early Firing — proven by data, not adjectives.
How we measure
Every send is timed against its schedule
At fire time we record fired_at against the scheduled moment and store the real offset on each delivery. Once enough live traffic accrues, the service-wide numbers appear here — the same figures you see on your own dashboard.
- Second-level delivery. Webhooks fire on schedule, not on a best-effort delay queue.
- Early Firing. We fire slightly early to offset round-trip latency, opt-in per send.
- Published, not claimed. The offset we show is the measured value, never a guarantee.
Live service health is always on the status page.
Live status
Real-time service health
The same signals we watch internally — API, database, delivery queue, and the fire worker — straight from the live health checks.
—Webhooks queued
—Dead-letter backlog
—Last worker heartbeat
Uptime — last 90 daysDaily history accrues as the service runs
90 days agoToday
Auto-refreshes every 30 seconds. These signals come straight from the live service health checks.