Average Ratings 4 Ratings
Average Ratings 2 Ratings
Description
KumoMTA is an open source mail transfer agent and email infrastructure platform for enterprises, MailOps teams, and high-volume senders. The platform is built to provide the control, scalability, transparency, and continuity that organizations need when email delivery is central to their business. KumoMTA is positioned as an alternative to commercially licensed MTA providers that may create pricing shocks, renewal risk, vendor dependency, or black-box infrastructure limitations. The platform can deliver tens of millions of messages per hour on a single instance and is designed to support large-scale sending without data loss. Its open source model gives teams direct access to the code and more authority over deployment, operations, and long-term infrastructure decisions. KumoMTA also emphasizes performance, resilience, cost predictability, fairness, and transparent stewardship. The community includes developers, security researchers, and enterprises that help audit code, identify vulnerabilities, and improve the platform over time. KumoMTA provides extensive documentation, a community forum, GitHub repository, migration resources, and support options for teams moving from other MTA platforms. By combining open source email infrastructure, high-volume performance, operational control, community development, documentation, and enterprise support, KumoMTA helps organizations invest in their own email infrastructure with greater confidence.
Description
MailDeck stands out as the premier platform for enterprise cold email infrastructure, meticulously designed to cater to high-volume senders who require exceptional deliverability without compromise. Renowned among sales teams, growth agencies, and revenue-driven organizations that dispatch millions of emails monthly, MailDeck ensures the most dependable inbox architecture for effective cold outreach. Furthermore, the platform effortlessly integrates with Google Workspace, Microsoft 365, and numerous SMTP providers, creating a cohesive, enterprise-level sending infrastructure that enhances overall performance and efficiency. With these integrations, users can optimize their outreach strategies while maintaining a consistent and reliable email flow.
API Access
Has API
Yes
API Access
Has API
No
Screenshots View All
No images available
Integrations
Gmail
No
Google Workspace
No
Microsoft 365
No
Ongage
Yes
Postmastery
Yes
Prometheus
Yes
Integrations
Gmail
Yes
Google Workspace
Yes
Microsoft 365
Yes
Ongage
No
Postmastery
No
Prometheus
No
Pricing Details
$0
KumoMTA is Open-Source and free to use, those interested in support and services can contact us.
Free Trial
Yes
Free Version
Yes
Pricing Details
$99 for 30k emails/month
Free Trial
No
Free Version
No
Deployment
Web-Based
Yes
On-Premises
Yes
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
Yes
Chromebook
No
Deployment
Web-Based
Yes
On-Premises
No
iPhone App
No
iPad App
No
Android App
No
Windows
No
Mac
No
Linux
No
Chromebook
No
Customer Support
Business Hours
Yes
Live Rep (24/7)
Yes
Online Support
Yes
Customer Support
Business Hours
No
Live Rep (24/7)
Yes
Online Support
Yes
Types of Training
Training Docs
Yes
Webinars
Yes
Live Training (Online)
Yes
In Person
Yes
Types of Training
Training Docs
Yes
Webinars
No
Live Training (Online)
No
In Person
No
Vendor Details
Company Name
Kumo Corp
Founded
2023
Country
United States
Website
kumomta.com
Vendor Details
Company Name
MailDeck
Founded
2025
Country
United States
Website
maildeck.co
Product Features
Email Management
Data Recovery
No
Email Archiving
Yes
Email Deletion
No
Email Discovery
No
Email Monitoring
Yes
Email Recall
No
Queue Manager
Yes
Response Management
No
Routing
Yes
Shared Inboxes
No
Signature Management
No
Spam Blocker
No
Whitelisting / Blacklisting
Yes