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What is OffHours for Outlook?

This add-in guarantees that emails dispatched after business hours or during weekends will not be sent until the start of the next working day. You have the flexibility to adjust the recurring appointment labeled “AllowedToSend,” which specifies the times when you prefer immediate email delivery versus when a delay is necessary. This appointment is accessible within the subfolder "AllowedToSend," located in your Calendar, making it easy to manage your email scheduling preferences. By using this feature, you can maintain a healthy work-life balance while ensuring that your communications are timed effectively.

What is KumoMTA?

KumoMTA is an open source email infrastructure platform designed for enterprises, email service providers, and high-volume senders that need scalable, transparent, and controllable MTA technology. The platform is built for organizations that want to own their email sending infrastructure rather than depend on closed commercial systems. KumoMTA emphasizes performance, with the ability to send tens of millions of messages per hour on a single instance. It is designed to provide the scalability and resilience needed for large-scale email operations without sacrificing visibility or control. Because the platform is open source, teams can inspect the code, understand how the system works, and maintain authority over their deployment. KumoMTA is positioned around long-term stability, cost predictability, fair pricing, operational control, and reduced exposure to vendor lock-in or surprise renewal changes. The platform is supported by a growing community of developers, security researchers, enterprises, and MailOps professionals who contribute to innovation, auditing, vulnerability identification, and ongoing improvement. KumoMTA provides extensive documentation, community resources, a GitHub repository, migration guidance, and support options for teams evaluating or replacing existing MTA infrastructure. Its resources include migration information for platforms such as Hurricane MTA, Momentum, PowerMTA, and SendGrid. The platform is built for teams that need confidence in their email architecture, predictable infrastructure decisions, and the ability to send at massive scale. By combining open source MTA technology, high-volume delivery, code transparency, community stewardship, enterprise support, documentation, and migration resources, KumoMTA helps organizations modernize email infrastructure while keeping control of their operations.

Media

Media

Integrations Supported

Microsoft 365
Microsoft Outlook
Ongage
Postmastery
Prometheus

Integrations Supported

Microsoft 365
Microsoft Outlook
Ongage
Postmastery
Prometheus

API Availability

Has API

API Availability

Has API

Pricing Information

$35
Free Version
Free Trial Offered?

Pricing Information

$0
KumoMTA is Open-Source and free to use, those interested in support and services can contact us.
Free Version
Free Trial Offered?

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

IvaSoft

Date Founded

2000

Company Location

Russia

Company Website

www.ivasoft.com

Company Facts

Organization Name

Kumo Corp

Date Founded

2023

Company Location

United States

Company Website

kumomta.com

Categories and Features

Email Management

Data Recovery
Email Archiving
Email Deletion
Email Discovery
Email Monitoring
Email Recall
Queue Manager
Response Management
Routing
Shared Inboxes
Signature Management
Spam Blocker
Whitelisting / Blacklisting

Categories and Features

Email Management

Data Recovery
Email Archiving
Email Deletion
Email Discovery
Email Monitoring
Email Recall
Queue Manager
Response Management
Routing
Shared Inboxes
Signature Management
Spam Blocker
Whitelisting / Blacklisting

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