MailEnable 是為微軟的 Windows 作業系統提供一個強大、穩定、靈活性、可擴展性、簡單及易於管理等各種優秀特點的的郵件系統。MailEnable共分為三個不同的版本，分別是 Standard Edition（標準版）、Professional Edition（專業版）、Enterprise Edition（企業版）。
Version 10 provides the following additional functionality:
- Integrated WebMail/Mobile Chat
- WebMail Performance Improvements
- Updated WebMail and WebAdmin Interfaces (Default Skin)
- Standard Edition now includes Mobile WebMail Client
- Updated Mobile WebMail
- XMPP Sockets/BOSH Chat Service
- Video/Audio Chat
- Screen Sharing
- Proxy/Mailbox sharing for ActiveSync
- Integrated SOCKS5 Proxy (to improve integration with chat clients)
- Integrated HTTP Upload Service
- File Transfer Client Bridging (bridges file transfers between chat clients to improve interoperability)
MailEnable標準版現在支援IMAP。 IMAP支援的前身是提供專業版、企業版和MailEnable的高級版本。 IMAP允許郵件和文件夾直接儲存在雲端上（在MailEnable Server）而不須下載郵件到郵件客戶端或設備。這代表郵件可以在客戶端/設備共享，並且可以通過網絡郵件遠端控制。有了IMAP支援，MailEnable標準版用戶現在可以更輕鬆地使用行動設備上的託管服務器的電子郵件。
MailEnable還包括為蘋果iOS設計的“一鍵式”配置。不管你是使用Exchange ActiveSync或CalDAV/CardDAV/IMAP設置一個iPhone的帳戶將變的自動化。 此功能意味著用戶的郵件可以作為一個單一的服務，只需通過點擊Webmail或行動的Webmail連接配置在他們的iOS系統中使用的CalDAV/的CardDAV/ IMAP。
MailEnable Enterprise Premium擁有一個移動Web管理客戶端。當用戶與移動設備連接時，將會自動檢測到MailEnable的Web管理的簡化版本，方便進行管理。 這意味著系統管理員可以查看自己的服務器的運作狀況，並在他們的移動設備上執行簡單的管理任務。
MailEnable Outlook Collaboration
MAPI Connector for Microsoft Outlook
Users of Outlook will likely be familiar with the features for personal calendaring, contact management, and task tracking, and MailEnable Webmail users will also be aware of these same features supported through the webmail client. Now with the MAPI connector, these two features are connected, bringing your server hosted calendar to your Outlook client on your desktop computer, along with your contact and task lists.
Changes made in both Outlook and the webmail client are communicated in real-time, so you can always be sure you have the most up-to-date data at your fingertips. You can schedule an appointment using Outlook when you are at work, add a "To-do" item to your task list, and update the mobile phone number of a contact. Then when you are away
from your desk, you can still get access to your information from the webmail client, with all the latest updates made at your work desk. And, of course, likewise in reverse - if you get a phone call while you are away from your office, and you need to reschedule that appointment, you can use webmail to make the change, and when you get back to your desk, it will be updated, and you won't miss anything.
Appointment Scheduling & Invitations
As mentioned above, calendaring integration is one important advantage of a MAPI solution. To extend on that for the corporate scenario, Outlook supports meeting invitations. You can schedule a meeting with others in the office, and they will receive an invitation in their inbox. They then have the option to deny your invitation, suggest another time that suits them better, or accept, in which case the appointment is immediately added in to their calendar.
From your meeting invitation in your calendar, you can track the responses of the participants you sent invitations to. See how many people you are expecting, and whether a critical person is unable to attend so you can reschedule if necessary.
Free & Busy Status
When you are scheduling a meeting with a group of people, it can be difficult to find a time that works for everyone, but the MAPI solution makes it as easy as possible. The MailEnable server can communicate with Outlook to present to you a view of the free and busy status of all the attendees, so you can find a time slot where everyone is free, without having to go through the tedious, frustrating and lengthy process of sending out the invitations, waiting for the responses, suggesting alternative times, and rescheduling repeatedly.
Sharing & Collaboration
If you are familiar with the collaboration features already available in MailEnable through the webmail client, you would expect that to be supported in the new MAPI connector as well. You would not be disappointed. It is easy to connect to a shared resource, such as another user's calendar or entire mailbox to which they have granted you access. You can also set the sharing permissions for your own mailbox resources from within Outlook.
This is particularly useful for viewing another person's shared calendar. Outlook supports different ways of viewing multiple calendars simultaneously, including viewing them side by side, or overlaid, with different colouring to identify the different calendars.
If you grant full write access to your mailbox for another person, such as a secretary or personal assistant, that person can act on your behalf to do such things as create new appointments in your calendar, and update the details of your contacts.
My Files is a server hosted file storage feature available from MailEnable Professional Edition and Enterprise Edition. The MAPI connector integrates with this feature, providing access through Outlook to your My Files storage on the server. Your files will be listed in Outlook, with easy preview capability of most file types, including images, video, audio and office documents.
Perhaps the best thing about this feature is the ease of uploading files from your desktop computer to the mail server, via Outlook. You can simply drag and drop a file from your computer disk onto the My Files store in Outlook to send it to your mail account.
If you have just imported a set of photos from your digital camera onto your computer, you can select them all, and with one drag of the mouse, host them all on your My Files area. And of course, when you connect to your account in Webmail, all your newly uploaded files will appear there.
With the MailEnable MAPI connector, the postoffice directory is made immediately available through Outlook's address book. This gives every user access to the company contact list, including the ability to be prompted by Outlook when filling out half of a recipient's name while composing a new message.
Out of Office
The connector also adds a new menu to the Outlook application with a few options, one of which allows you to easily change your out-of-office status and message. When you are away on holiday or business, anyone who emails you will receive the message you configure as an automatic response, so they will know when to expect a reply.
MailEnable Mobile Connectivity
The increased popularity and technology advancement of smartphones has changed the way people look at their mobile phones. Rather than storing contacts, appointments, tasks, etc. on the mobile phone, users want their data in cloud storage so they can access it from anywhere on any device.
MailEnable allows mobile phone users to do this via ActiveSync, SyncML and DAV-based solutions. Modern phones and tablets can be used to access and update contacts and schedules via the device over the mobile network.
Microsoft Exchange ActiveSync for MailEnable
The Exchange ActiveSync for MailEnable module provides a premium solution for accessing mail, contacts, folders, tasks, and calendars on mobile devices. Having licensed the ActiveSync protocol from Microsoft, MailEnable is able to provide the same connectivity that is available through Microsoft Exchange.
ActiveSync provides the highest level of integration for the latest mobile devices including iPhone/iPad, Android and Windows Phone 7. It is also available on most other mobile platforms.
ActiveSync is able to negotiate changes and updates protocol uses a technology that is often referred to as "Push".
The "push" technology means that changes that are made on the mobile device are synchronized with the MailEnable server (and vice-versa) without requiring polling.
ActiveSync is also a very efficient protocol and minimizes the amount of data that is sent over the mobile network.
MailEnable Webmail Server
Webmail is an email service that uses a web browser to allow viewing, sending, receiving, editing & deleting of email, just as you would with standard email clients such as Outlook or Eudora. Webmail is ideal for mobile users because it allows you to access your email from anywhere, anytime with any computer connected to the Internet.
MailEnable includes powerful anti-spam and security features to help keep your data secure, your server running smoothly, and your inbox free from junk mail.
MailEnable contains powerful administration features which can be easily administered through a user-friendly interface (Microsoft Management Console). The interface allows you access to all of the features of MailEnable including configuration details, services, filters, mailboxes etc.
The following table lists the minimum hardware and software requirements for MailEnable Standard, Professional and Enterprise Editions: