Software Alternatives & Reviews

KumoMTA VS Warmbox.ai

Compare KumoMTA VS Warmbox.ai and see what are their differences

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.

Warmbox.ai logo Warmbox.ai

Warm up your cold email inbox, and never land in spam anymore!
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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.

  • Warmbox.ai Landing page
    Landing page //
    2021-03-01

Warmbox help you to warm up your cold email inbox to never land in spam anymore πŸŽ‰

How does it work? Warmbox algorithm interacts automatically with your inbox, as humans, in order to increase your deliverability. Connect Warmbox to your inbox in seconds. Warmbox will send emails from your inbox. Remove these emails from the Spam folder. Open your emails. Bookmark your emails. Reply to your emails. Your inbox gets warm. Your emails don't land in spam anymore.

Want to give a try? πŸ‘‰ https://warmbox.ai/

KumoMTA

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

Warmbox.ai

Website
warmbox.ai
$ Details
freemium $9.0 / Monthly
Platforms
Email Warm Up Service Google Workspace Inbox Gmail / Gsuite Inbox Office 365 Outlook Amazon SES Mailgun Zoho Yandex iCloud Sendgrid Yahoo Aol Any Inbox With SMTP
Release Date
2020 June

KumoMTA features and specs

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

Warmbox.ai features and specs

  • Email warmup: Automated interactions Auto-Remove from Spam Auto-Reply to emails Mark as favorite emails Spam score monitoring AI Generated emails (GPT-3) Growth, Flat or Random warm-up Fully custom warm-up Warm-up Schedule Detailed analytics Private inboxes network Reporting & Dashboard
  • Inbox integrations: Gmail - Gsuite inbox (OAuth) Outlook - Microsoft 365 Yahoo Inbox iCloud Inbox AOL - Verzizon Inbox Yandex Inbox Zoho Inbox Sendgrid Inbox Sendinblue Inbox Mailgun Inbox Amazon SES Inbox Any other Inbox (SMTP)
  • Account & services: Multi-account for agencies Team members In-app Onboarding Third-party app Password Detailed Help Center Live chat support Product updates Blog resources Affiliate program Securised payment

KumoMTA videos

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Warmbox.ai videos

Warm-up your cold email inbox. And never land in spam anymore.

Category Popularity

0-100% (relative to KumoMTA and Warmbox.ai)
Email
5 5%
95% 95
SMTP Server
100 100%
0% 0
Email Marketing
0 0%
100% 100
Email Delivery
100 100%
0% 0

Questions and Answers

As answered by people managing KumoMTA and Warmbox.ai.

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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Reviews

These are some of the external sources and on-site user reviews we've used to compare KumoMTA and Warmbox.ai

KumoMTA Reviews

We have no reviews of KumoMTA yet.
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Warmbox.ai Reviews

  1. Best warm-up tool

    Using Warmbox since few months and work like a charm! Got no email landing in spam now, recommend at 100%

    Thanks to the team πŸŽ‰

    πŸ‘ Pros:    Efficient|Simple but powerful|Affordable price
  2. #1 Email warm-up tool

    The best tool around after trying most of email warm-up software!


23 Best Cold Email WarmUp Tools in 2022 (Free + Paid)
Warmbox is a standalone email warming strategy service with excellent user interface and user experience.it’s a paid version, once you connect your inbox to Warmbox, it will automatically send emails from your email address to its network of +10000 mailboxes. Warmbox automatically recommends the option that best suits you among its 4 warming up way. You can change the...
Source: inguide.in
Top 10 of the Best Email Warm Up tools in 2022
Once you connect your inbox to Warmbox, it will automatically send emails from your email address to its network of +10000 mailboxes. Warmbox automatically recommends the option that best suits you among its 4 warming up recipes. You can change the sending method and increase the number of emails you want to send at any time.
Source: mailmeteor.com
7 Best Cold Email Warm-up Software
Out of all warm-up tools, Warmbox.ai is the clear winner from warming up your email using 10,000 inboxes to raise your email reputation, writing a human mimicking email using GPT-3, with an intelligent dashboard that helps you to track and monitor. Warmbox integrates with almost all email service providers from Gmail to Zoho mail. You can check out Warmbox.ai by clicking the...

Social recommendations and mentions

Based on our record, Warmbox.ai should be more popular than KumoMTA. It has been mentiond 4 times 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.

KumoMTA mentions (1)

Warmbox.ai mentions (4)

  • 51% of emails are landing in Spam and never reach your leads!
    I'm really happy to announce to you that I'm launching a new product around email deliverability: Warmbox.ai, one of the most advanced email warm-up tool that helps you to never land in spam. On ProductHunt, today! Source: almost 3 years ago
  • I created an email checker tool in 2 weeks (Mailook) to help people to fix their email deliverability and prepare the launch of my main product on PH: Warmbox (we are live today! 😻)
    By the way, I'm really happy to announce to you that we're launching a new product around email deliverability: Warmbox.ai, the most advanced email warm-up tool that helps you to never land in spam. On ProductHunt, today! It integrates natively the Mailook feature for, so you can check your deliverability for free inside it! Source: almost 3 years ago
  • Warm-up your inbox and never land in spam anymore - We launched Warmbox on PH 😻
    Hello guys! πŸ˜ƒ We are launching on PH today Warmbox.ai to help anyone to warm-up your inbox and never land in spam anymore! Source: almost 3 years ago
  • Best email automation software
    Interested in warmbox.ai bro. Did you try its alternatives? Mailwarm or mailreach? Source: about 3 years ago

What are some alternatives?

When comparing KumoMTA and Warmbox.ai, you can also consider the following products

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

MailReach.co - The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

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

Warmup Inbox - Warmup Inbox is a tool that automates the process of warming up your email inboxes, raising your sender reputation and inbox health automatically.

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

Mailwarm - The email warm-up tool.