See Exactly What Happens to Every Email
Real-time delivery observability, engagement tracking, bounce diagnostics, and domain reputation metrics—from the moment you hit send.
Free tier: 3,000 tracked emails/month. Instant setup, zero lock-in.
Metrics
Deliverability and engagement metrics for your emails.
Deliverability
Emails
29,486
Deliverability Rate
98%
Bounces
546
Explore Deep Email Telemetry
Interact with live deliverability waterfalls, link attribution matrices, raw SMTP bounce codes, and real-time event ingestion feeds.
Total Ingested
128,450
+12.4% vs last period
Delivered Rate
99.4%
127,680 emails delivered
Unique Open Rate
46.8%
59,750 verified opens
Spam Complaint Rate
0.01%
Far below 0.10% threshold
Delivery Pipeline Funnel
Engineered for Absolute Clarity
From raw MTA handshake logs to high-level domain health, Reloop provides complete email observability without compromise.
Sub-Second Event Ingestion Pipeline
High-throughput event streaming engine processes deliveries, opens, clicks, and bounces in under 25ms. Never wait for daily batch jobs to discover delivery issues.
Apple MPP & Bot Filtering
Automatically identify Apple Mail Privacy Protection (MPP) proxy pre-fetches and machine scanners to give you genuine human engagement statistics.
ISP Postmaster Sync
Direct integration with Google Workspace and Yahoo Postmaster APIs to track domain reputation, IP reputation, and spam rates before they hurt your inbox placement.
Custom Tags & Dimensions
Attach arbitrary metadata to your send payloads. Slice and dice metrics by tenant ID, user plan, campaign cohort, or template version in real time.
tags: { tenant: "enterprise_9", env: "prod" }Data Warehouse Sync
Export raw events continuously to your Snowflake, BigQuery, ClickHouse, or AWS S3 buckets. Build custom BI dashboards on top of your own data warehouse.
99.4%
Delivery Success Rate
Across global mailbox providers
< 25ms
Event Ingestion Latency
Sub-second webhook firing
365 Days
Event Retention
Full raw event log history
100%
Open Source Engine
Self-hostable or managed cloud
Live ISP Deliverability Benchmark
Continuous synthetic and production inbox placement tracking
Query Analytics in 3 Lines of Code
Full programmatic access to your email metrics. Query time-series analytics, track delivery SLAs, and fetch raw diagnostic payloads.
import Reloop from 'reloop-email';
const reloop = new Reloop(process.env.RELOOP_API_KEY);
// 1. Fetch aggregate metrics for a timeframe
const stats = await reloop.analytics.getMetrics({
timeframe: '30d',
groupBy: 'domain',
tags: { environment: 'production' }
});
console.log(`Delivery rate: ${stats.deliverabilityRate}%`);
console.log(`Unique opens: ${stats.uniqueOpens}`);
// 2. Query raw delivery and bounce events
const events = await reloop.events.list({
type: 'email.bounced',
limit: 20
});Frequently Asked Questions
Everything you need to know about Reloop email analytics and deliverability monitoring.
Total clarity on your email deliverability.
Start for free.
Join thousands of developers tracking email delivery, engagement, and bounce diagnostics in real time with Reloop.