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.
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.
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.
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KumoMTA's answer
KumoMTA is the only high-performance, highly flexible MTA built for senders that is Open-Source with a free license.
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.
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.
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.
KumoMTA's answer
KumoMTA's answer
High-volume multi-tenant senders.
Based on our record, Amazon SES seems to be a lot more popular than KumoMTA. While we know about 65 links to Amazon SES, we've tracked only 1 mention of KumoMTA. 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.
I've been using KumoMTA for the past 3 months and it's one of the most well thought-out, stable and fast softwares I've ever used. https://kumomta.com/. - Source: Hacker News / 2 months ago
Formspark is a great service for this with a generous free tier. If you end up scaling up and need more and/or advanced transactional emails you may consider an email API like SendGrid, Amazon SES, or Waypoint. Source: 7 months ago
AWS Simple Email Service (SES) touts itself as "a cost-effective, flexible, and scalable email service". It's a product offering from Amazon Web Services and is designed to send high volumes of transactional emails. AWS SES is lighter on features than some of the other services we're comparing in this list, but if you're already deployed within AWS or use any other products within the AWS suite it might be worth... - Source: dev.to / 7 months ago
You can self host email if you really want to, but it's really more trouble than it's worth. If you do self host, you have to worry about the consequences of missed emails if your server or Internet ever goes down, and you'll have to use someone else's SMTP server if you don't want your emails to go directly to spam. The cheapest good SMTP server is Amazon SES, which I believe is $0.10 per 10k emails. I've been... Source: 10 months ago
I only run a forwarding mail server, nothing to host my own mail. I use Amazon's Simple Email Service to relay emails from my various services. Source: 10 months ago
For this article, we will use the SMTP server provided by SendGrid which is commonly used, but you can also use a different SMTP server such as AWS SES or even the Gmail SMTP server. The only thing you will change here is your secrets. - Source: dev.to / 11 months ago
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