iMail Alternatives

iMail is described as 'Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo. Free for commercial use' and is a Mail Server in the online services category. There are more than 25 alternatives to iMail for a variety of platforms, including Linux, Web-based, Windows, Self-Hosted and Mac apps. The best iMail alternative is Google Workspace. It's not free, so if you're looking for a free alternative, you could try mailcow: dockerized or Kolab Community. Other great apps like iMail are Zentyal, Zimbra Collaboration Suite, SOGo and hMail Server.

iMail iconiMail
  3
  • ...

Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows...

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iMail alternatives page was last updated Jan 21, 2020
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  1. SmarterMail Mail Server icon

    SmarterMail Mail Server

     3 likes
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    SmarterMail is the only other email server on the market with native support for MAPI, the protocol that powers Exchange and Outlook. That means anything you can do on Exchange you can do with SmarterMail: no plug-ins and no additional software required.

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Windows
    • Linux
    • Docker
    Audio and video conferencing for your team. Includes screen sharing, unlimited chat attendees, file sharing with previews, public or private conferences, and much more.

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Email Organizer
    2.  End-to-End Encryption
    3.  Two-factor Authentication
    4.  Mail Filtering
    5.  WYSIWYG Support
    6.  Multiple Account support
    7.  Passkey Support
    8.  Shared Folders
    9.  Real time collaboration
    10.  No Tracking
    11.  Remote Work
    12.  Video Conferencing

    SmarterMail Mail Server VS iMail

     
  2. OX App Suite icon

    OX App Suite

     15 likes
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    The OX App Suite by Open-Xchange is web-based platform offering a suite of apps like an email client, calendar, contacts magement, cloud storage with synchronization and productivity apps for word processing, spreadsheets and presentations.

    19 OX App Suite alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    OX Portal

    OX App Suite Features

    1.  Real time collaboration
    2.  Cloud Sync
    3.  Calendar Integration
    4.  Personal Information Manager (PIM)
    5.  Group Mail
    6.  WebDAV Support
    7.  WebDAV Sync

    OX App Suite VS iMail

     
  4. iRedMail icon

    iRedMail

     20 likes
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    A fully fledged, free email server solution, an open source project (GPL v2).

    Use official binary packages from Linux/BSD distributions, with both i386 and x86_64 support.

    Easy, fast deployment in LESS THAN 1 MINUTE. View YouTube Video to check how easy it is.

    Works on both no.

    67 iRedMail alternatives

    License model

    • Freemium • Open Source

    Application type

    Platforms

    • Linux
    • BSD
    • Self-Hosted
    Main components and working process

    iRedMail VS iMail

     
  5. Ad
    Screenshot
    Zentyal icon
    Zentyal

    Integrates native Active Directory and all essential network services, including domain, mail, gateway, infrastructure, and security roles, for SMBs, offering web-based management, centralized authentication, file server, VPN, an...

    https://zentyal.com
    Learn More
  6. OpenChange icon

    OpenChange

     9 likes
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    OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.

    License model

    • Free • Open Source

    Application type

    Platforms

    • Linux
    Discontinued

    Last release is from 2015

    OpenChange Features

    1.  Exchange

    OpenChange VS iMail

     
  7. CrossBox icon

    CrossBox

     1 like
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    Real-time email, chat, audio/video calls & conferences, file-sharing, and contacts app with a modern and intuitive UI.

    41 CrossBox alternatives

    License model

    Application types

    Country of Origin

    • BA flagBosnia & Herzegovina

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    View Mailbox (Dark mode)

    CrossBox Features

    1.  File Hosting

    CrossBox VS iMail

     

    • CrossBox is the most popular Android, iPhone, iPad & Android Tablet alternative to iMail.

    • CrossBox is Paid and ProprietaryiMail is also Paid and Proprietary

  8. Citadel

     7 likes
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    Is a collaboration suite (messaging and groupware). It is designed to run on open source operating systems such as Linux or BSD. In order to modernize the Citadel platform for the Internet, the Citadel/UX developers added functionality such as shared calendars, instant...

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    • Online

    Citadel Features

    1.  Real time collaboration

    Citadel VS iMail

     
  10. Poste.io icon

    Poste.io

     3 likes
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    Full featured solution for your Email server. Native implementation of last anti-SPAM metods, webmail and easy administration included.

    19 Poste.io alternatives

    License model

    • Free Personal • Proprietary

    Application type

    Platforms

    • Linux
    Poste.io screenshot 1

    Poste.io Features

    1. Docker icon  Support for Docker

    Poste.io VS iMail

     
  11. MDaemon Messaging Server icon

    MDaemon Messaging Server

     16 likes
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    Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for companies that want control of their email. Integrated web-mail with doc sharing, Drop Box integration, client and server side encryption.

    License model

    Application types

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Windows
    MDaemon's web-based email

    MDaemon Messaging Server Features

    1.  Encrypted Email
    2. Microsoft Outlook icon  Outlook integration
    3.  IMAP Support
    4. Dropbox icon  Dropbox integration

    MDaemon Messaging Server VS iMail

     
  12. Kerio Connect icon

    Kerio Connect

     8 likes
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    Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure access to your communications anytime, anywhere, on any device - without complexity or expensive overhead.

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    Screenshot of the web-based admin panel

    Kerio Connect Features

    1. XMPP icon  Supports XMPP
    2.  Sync Contacts
    3.  POP3 Support
    4.  Calendar Sync

    Kerio Connect VS iMail

     
  13. Sendmail icon

    Sendmail

     4 likes
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    Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet.

    28 Sendmail alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Linux
    Main Page

    Sendmail Features

    1.  SMTP Support

    Sendmail VS iMail

     
  14. EGroupware icon

    EGroupware

     8 likes
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    Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre.

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • Software as a Service (SaaS)
    EGroupware on the desktop --- EGroupware offers with the modules - E-mail - Calendar - Address book - InfoLog (tasks, notes, ...) - File manager - Ticket system - Project Manager - Timesheet - Collabora Online Office - Rocket.Chat an entire office in the browser.

    EGroupware Features

    1.  Real time collaboration
    2.  Kanban Board
    3.  Document Sharing
    4.  Remote Work
    5.  Web-Based
    6.  CalDAV Support
    7.  RDP
    8.  WebDAV Support
    9.  CardDAV Support
    10.  Calendar Sync

    EGroupware VS iMail

     
  15. OBM icon

    OBM

     4 likes
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    OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.

    License model

    • Free • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    OBM screenshot 1
    Discontinued

    The GitHub repository has been archived and the last update was in 2017.

    OBM Features

    1.  Real time collaboration
    2.  CalDAV Support

    OBM VS iMail

     
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