Email delivery and advanced analytics, all in one platform.

Don’t settle for an ESP with inadequate data and reporting. With SocketLabs, not only do you get reliable and affordable email service, you also get Spotlight, our powerful reporting tool, for more insight and better performance.

SocketLabs Email Delivery Platform At-A-Glance

One platform. Every message. Full visibility from send to inbox.

Flexible Sending Infrastructure

Send through SMTP or API with the infrastructure control you need—IP Pools, Subaccounts, and Rule Engine—built to scale and protect your deliverability from day one.

Real-Time Deliverability Intelligence

Every message you send feeds into Spotlight, giving you instant visibility into delivery rates, engagement trends, and sender reputation—stream by stream.

StreamScore-Based Performance Monitoring

Track the health of every subaccount with StreamScores that surface risk early and make optimization obvious, not optional.

Actionable Data Meets Instant Control

Pair analytics with infrastructure—Spotlight shows you what’s going wrong, and SocketLabs gives you the tools to fix it fast.

Send email via SMTP or our flexible API, available in C#, PHP, Node.js, Phython, GoLang, Java, and Ruby

The Only Platform That Sends Smart and Shows You Everything

Most platforms force you to choose: reliable sending or meaningful analytics.
We don’t.
SocketLabs gives you both: enterprise-grade SMTP and API sending capabilities, plus Spotlight, a powerful observability layer that tells you exactly how your email is performing—and why.
Send through a rock-solid delivery engine with IP Pools, Subaccounts, and Rule Engine
Monitor every subaccount in real time with performance scoring and delivery metrics
Drill into complaint rates, bounces, engagement drops, and domain-specific issues
👉 Deliver with confidence. Fix with clarity.

StreamScore: Your Reputation, Quantified

Every subaccount in your SocketLabs server is continuously evaluated and assigned a StreamScore—a real-time rating of how that traffic is performing.
It’s the fastest way to know where you stand—and where you’re at risk.
Use StreamScore to:

  • Prioritize fixes before deliverability problems escalate
  • Hold senders accountable with clear, data-backed scoring
  • Protect your best-performing traffic with surgical precision

StreamMonitor: Real-Time, Subaccount-Level Intelligence

StreamMonitor is your email command center. It shows every subaccount you’re sending from, ranked and scored in real time.
No spreadsheets. No API wrangling. Just instant clarity.
You’ll see:

  • Color-coded stream health at a glance
  • Volume spikes, complaint surges, and sudden engagement drops
  • Subaccount-level drilldowns with all the context you need to act fast

Infrastructure + Intelligence = Control

What sets SocketLabs apart isn’t just that we send well—it’s that we tell you how to send better.
Spotlight insights are fully integrated with our sending tools. That means when a problem shows up, you can:

  • Reroute traffic with Rule Engine
  • Isolate senders with Subaccounts
  • Protect deliverability using IP Pools
  • Throttle or cut off failing streams—no code required

Designed for Serious Senders

Whether you’re a SaaS platform sending on behalf of users, an agency managing dozens of clients, or a high-volume sender trying to stay ahead of inbox filters—SocketLabs was built for you.
You get the infrastructure to scale, the insights to optimize, and the tools to adapt—without dragging in a dev team every time something breaks.

What Customers Say About Us

"SocketLabs is clearly driven by customer success and has become a trusted partner of SignUp.com"
"It was like a breath of fresh air having something that we could plug into in our environment, and make a few customizations, and be up and running in the blink of an eye."
"We've been working together for at least 8 years, and we wouldn't trust anybody else with our email delivery."
Lindsay Willott
CEO, Customer Thermometer

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