Fast, reliable, & powerful email delivery software for Email Service Providers

Need an MTA or even a complete email marketing platform?

Smarter email solutions for you and your customers.

To improve subscriber engagement, your customers expect an enhanced email software experience. When you choose GreenArrow, you get a high-performance delivery engine for fast, reliable bulk email communication, plus an optional email marketing application that’s easy to use. Give customers exactly what they need to build better campaigns.

Schedule a Free Demo

OnPrem vs Cloud
Enterprise-Grade OnPrem & Cloud software
Deliverability Features
More deliverability-enhancing features
Email Marketing
Optional, integrated email marketing app
OnPrem vs Cloud
A superior support team of experts

8M+ Per Hour

Send Fast:
Get your messages out quickly and efficiently. Send over 8 million messages per hour.

200M+ Per Month

High-Volume:
Hundreds of millions of messages per month per server/account or more

8B+ Per Month

Trusted:
GreenArrow customers send over 8 billion messages per month combined.

Need a more powerful On-Premises Mail Transfer Agent?

Send your volume faster.
Deliver smarter with GreenArrow Engine.

GreenArrow Engine API
  • Delivery rates of 8M messages per hour per server depending on message size through SMTP or HTTP API
  • Can integrate with complex or niche systems
  • Configure your way: API/UI or configuration files
  • Get better insights with Dynamic Delivery Charts
  • Improved management with Virtual MTAs, flexible email routing, and automatically adjusted throttling
  • Optional transparent click and open tracking
More Engine On-Premises features
1

Looking for a Cloud solution?

WE’VE GOT IT.

For a fully managed, turnkey, SMTP and API delivery + email marketing software, see our Engine Cloud Edition ›
Not sure which is right for you? Review On-Premises vs. Cloud Comparison ›

“Highly customizable, Lasso has a lot of highly unique requirements and GreenArrow is the only platform that could meet our needs.”

Travis Edgar

Lasso CRM

Need a complete email marketing platform?

Help customers learn from subscribers and grow better relationships.
Help them build smarter with Marketing Studio.

GreenArrow Marketing Studio Template
  • Responsive, drag-and-drop editor
  • Intuitive, easy-to-use interface
  • A/B Testing, Advanced Segmentation, Triggered Email, and more
  • Our comprehensive API and message customization hooks for more powerful integrations
  • Marketing Studio delivers with the power of GreenArrow Engine: Get more control with On-Premises Edition or leave it up to our deliverability experts with our Cloud Edition
More Marketing Studio features
1

More features for Email Service Providers:

  • Serve all of your customers on a single server with sub-accounts.
  • Set fine-grained permissions to access IPs, Virtual MTAs, and domain names for each sub-account.
  • Limit message volume and subscriber count, and set automatic warnings as they approach quotas.
  • We offer white labeling so you can show off your own brand by customizing style sheets and images.
  • APIs for setting up accounts, managing account permissions, and getting billing data.

Ready for a test drive?

We educate generously so you can control the technology, not the other way around.

Schedule a demo with us and we’ll help you figure out how it can work for you.

Our dedicated team of problem-solvers supports our customers with expertise and with compassion.

What Counts
Zeta Global
Elite Email
Alert Solutions
Email Platform