Software Alternatives & Reviews

GreenArrow Engine VS KumoMTA

Compare GreenArrow Engine VS KumoMTA and see what are their differences

GreenArrow Engine logo GreenArrow Engine

GreenArrow Transactional Email provides a flexible and secure SMTP and API email delivery from application or website.

KumoMTA logo KumoMTA

KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.
  • GreenArrow Engine Landing page
    Landing page //
    2021-07-25
Not present

The History of KumoMTA

KumoMTA is an open source Message Transfer Agent (MTA) designed to provide high performance outbound email functionality.

The KumoMTA project was founded by a group of email industry veterans with decades of experience building and managing high-performance On-Prem MTAs and is supported by a community of some of the largest senders in the world. While paying attention to the lessons of history, KumoMTA was designed from the ground up with new tech as opposed to modifying something that already existed. We specifically avoided making a modification of Postfix or Exim or some other existing MTA and instead wrote entirely new code in Rust.

What is a "Kumo"?

So how did we come up with the name KumoMTA? We set out to build a cloud deployable on-premises MTA that was flexible enough to install both on bare metal and in a public or private cloud. Kumo means cloud in Japanese, so "KumoMTA" is a Cloud MTA.

Why Open Source?

High volume commercial MTAs tend to have closed source code and steep license fees. Neither of these are particularly bad as long as the software is maintained and is flexible enough to modify. However, the kind of people who typically install very complex high-volume MTAs usually want to modify it or integrate it into other systems. Providing an open source option allows people to modify the code as needed, and contribute modifications easily to the community. The email community is full of very smart, creative people who now have an avenue to contribute to a wider community project.

KumoMTA

$ Details
free
Platforms
Ubuntu Rocky Linux Docker Marlin AWS Azure Google Compute
Release Date
2023 February

GreenArrow Engine features and specs

No features have been listed yet.

KumoMTA features and specs

  • Performance: Over 10mm/hr per Server
  • Config As Code: Yes - Lua
  • DKIM: Yes
  • Policy Engine: Yes - Lua

Category Popularity

0-100% (relative to GreenArrow Engine and KumoMTA)
Email Delivery
60 60%
40% 40
Email
41 41%
59% 59
SMTP Server
43 43%
57% 57
Email Marketing
100 100%
0% 0

Questions and Answers

As answered by people managing GreenArrow Engine and KumoMTA.

What makes your product unique?

KumoMTA's answer:

KumoMTA is the only high-performance, highly flexible MTA built for senders that is Open-Source with a free license.

What's the story behind your product?

KumoMTA's answer:

KumoMTA was built by a team of industry veterans to address a need in the market for an Open-Source solution that has the performance and flexibility of the commercial MTA offerings but without the restrictive licensing that the industry has grown weary of.

Which are the primary technologies used for building your product?

KumoMTA's answer:

KumoMTA is built on Rust, with Lua used for its Config as Code engine, making extensive customization and integrations straightforward while providing extreme performance and safety.

Why should a person choose your product over its competitors?

KumoMTA's answer:

When an organization needs to send up to millions of messages per hour, or needs deep integration in a modern DevOps environment, but doesn't want to be bound by restrictive license agreements and mandatory annual fees.

Who are some of the biggest customers of your product?

KumoMTA's answer:

  • Taguchi Marketing

How would you describe your primary audience?

KumoMTA's answer:

High-volume multi-tenant senders.

User comments

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Social recommendations and mentions

Based on our record, KumoMTA seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

GreenArrow Engine mentions (0)

We have not tracked any mentions of GreenArrow Engine yet. Tracking of GreenArrow Engine recommendations started around Mar 2021.

KumoMTA mentions (1)

What are some alternatives?

When comparing GreenArrow Engine and KumoMTA, you can also consider the following products

Halon MTA - Scriptable and scalable SMTP server and email framework designed for service providers.

PowerMTA - PowerMTA is an industrial-strength software for high-volume email delivery.

MailerQ - MailerQ is a high performance Mail Transfer Agent (MTA) designed for delivering large volume email messages at very high speeds.

Amazon SES - Scale your business email & marketing messages with Amazon Simple Email Service (SES), a cost-effective and reliable cloud email service. Sign up today.

Postfix - Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

SendGrid Email API - You can use SendGrid via SMTP or our simple to use Web API. Understand how best to utilize SendGrid.