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hMail Server vs WhenAvailable

Professional comparison and analysis to help you choose the right software solution for your needs.

hMail Server icon
hMail Server
WhenAvailable icon
WhenAvailable

hMail Server vs WhenAvailable: The Verdict

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature hMail Server WhenAvailable
Sugggest Score — —
Category Network & Admin Online Services
Pricing Open Source Open Source

Product Overview

hMail Server
hMail Server

Description: hMail Server is an open-source email server for Microsoft Windows. It allows you to send and receive email using POP3, SMTP and IMAP protocols. Designed specifically for Windows platforms, hMail Server is easy to install and manage.

Type: software

Pricing: Open Source

WhenAvailable
WhenAvailable

Description: WhenAvailable is an open-source meeting scheduling assistant. It integrates with your calendar to find times when all attendees are available to meet.

Type: software

Pricing: Open Source

Key Features Comparison

hMail Server
hMail Server Features
  • POP3 and SMTP server
  • IMAP4 server
  • Webmail interface
  • Email aliases
  • Email forwarding
  • Email filtering
  • Anti-virus and anti-spam protection
  • Email archiving
  • CalDAV and CardDAV support
  • Multi-domain hosting
WhenAvailable
WhenAvailable Features
  • Open-source meeting scheduling assistant
  • Integrates with calendars
  • Finds times when all attendees are available to meet

Pros & Cons Analysis

hMail Server
hMail Server
Pros
  • Free and open source
  • Easy to install and configure
  • Supports multiple languages
  • Web-based administration
  • Built-in spam and virus protection
Cons
  • Limited scalability
  • Lacks some advanced features of commercial options
  • Requires Windows Server
  • Limited technical support
WhenAvailable
WhenAvailable
Pros
  • Free and open source
  • Easy integration with calendars
  • Automates scheduling coordination
Cons
  • Limited features compared to paid tools
  • Requires some technical know-how to set up and use

Pricing Comparison

hMail Server
hMail Server
  • Open Source
WhenAvailable
WhenAvailable
  • Open Source

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Learn More About Each Product

hMail Server
hMail Server
Reviews, pricing & alternatives →
WhenAvailable
WhenAvailable
Reviews, pricing & alternatives →

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