|
|
Professional
|
Enterprise
|
Mail Services
|
|
POP
|
Yes
|
Yes
|
|
SMTP
|
Yes
|
Yes
|
|
POP Retrieval
|
Yes
|
Yes
|
|
HTTPMail
|
Yes
|
Yes
|
|
IMAP
|
Yes
|
Yes
|
|
Web mail
|
Yes
|
Yes
|
POP Service
|
|
Customize welcome message (for security)
|
Yes
|
Yes
|
|
Allow concurrent user access to single mailbox
|
Yes
|
Yes
|
|
APOP authentication
|
Yes
|
Yes
|
|
IP address access control
|
Yes
|
Yes
|
|
Listen on alternate port
|
Yes
|
Yes
|
IMAP
|
|
Public folders
|
-
|
Yes
|
|
IDLE support
|
Yes
|
Yes
|
|
Listen on alternate port
|
Yes
|
Yes
|
HTTPMail
|
|
Public folders
|
Yes
|
Yes
|
Spam, antivirus and message filtering services
|
|
Message filtering (per mailbox)
|
-
|
Yes
|
|
Message filtering (per postoffice)
|
-
|
Yes
|
|
Greylisting
|
Yes
|
Yes
|
|
Reverse DNS blacklisting per post office
|
-
|
Yes
|
|
Antivirus scanning per post office
|
-
|
Yes
|
|
Antivirus scanning (via 3rd party scanner)
|
Yes
|
Yes
|
|
Configure global message filters
|
Yes
|
Yes
|
|
Bayesian anti-spam filtering
|
Yes
|
Yes
|
|
SPF (Sender Policy Framework)
|
Yes |
Yes |
|
Scripted filtering
|
Yes
|
Yes
|
|
URL Blacklisting
|
Yes
|
Yes
|
|
IP address access control
|
Yes |
Yes |
|
IP address whitelisting
|
Yes
|
Yes
|
|
Reverse DNS blacklisting
|
Yes
|
Yes
|
|
Require Ptr DNS record for unauthenticated inbound connections
|
Yes
|
Yes
|
Scalability
|
|
Store configuration in MySQL or Microsoft SQL Server
|
-
|
Yes
|
|
Migrate configuration data to/from database and MailEnable native storage
|
-
|
Yes
|
|
Clustering
|
-
|
Yes
|
Security and authentication
|
|
SSL for POP, SMTP and IMAP
|
Yes
|
Yes
|
|
CRAM-MD5 authentication for POP, SMTP and IMAP
|
Yes
|
Yes
|
|
NTLM authentication for POP, SMTP and IMAP
|
Yes
|
Yes
|
|
Active Directory/Windows Authentication
|
Yes
|
Yes
|
|
POP before SMTP authentication
|
Yes
|
Yes
|
Administration
|
|
Configure service availability per mailbox
|
-
|
Yes
|
|
Configure service availability per post office
|
-
|
Yes
|
|
Restrict message throughput per mailbox
|
-
|
Yes
|
|
Restrict message throughput per post office
|
-
|
Yes
|
|
Remotely administer servers
|
-
|
Yes
|
|
Prevent users from entering simple passwords
|
-
|
Yes
|
|
Lockout accounts after too many failed login attempts in a short time
|
-
|
Yes
|
|
Scheduled message purging
|
-
|
Yes
|
|
Quota warning notifications
|
-
|
Yes
|
|
Administration via Microsoft Management Console (MMC)
|
Yes
|
Yes
|
|
Domain renaming
|
Yes
|
Yes
|
|
SMTP forwarding
|
Yes
|
Yes
|
|
Sender domain validation
|
Yes
|
Yes
|
|
Internal and external IP validation
|
Yes
|
Yes
|
|
Domain level smart hosting
|
Yes
|
Yes
|
|
Message size restriction
|
Yes
|
Yes
|
|
Domain literals
|
Yes
|
Yes
|
|
Disable catch-alls for entire system
|
Yes
|
Yes
|
|
Restrict the number of recipients per inbound message
|
Yes
|
Yes
|
|
Automatically ban IP addresses after too many failures
|
Yes
|
Yes
|
|
Mask IP addresses in e-mail headers
|
Yes
|
Yes
|
|
Validate domain MX records on inbound connection
|
Yes
|
Yes
|
|
Restrict the maximum number of inbound connections
|
Yes
|
Yes
|
|
Restrict the maximum number of outbound connections
|
Yes
|
Yes
|
|
Mark inbound catch-all messages with a custom header
|
Yes
|
Yes
|
|
Limit maximum outbound message size
|
Yes
|
Yes
|
|
Limit maximum inbound message size
|
Yes
|
Yes
|
|
Configure allowed SMTP verbs
|
Yes
|
Yes
|
|
Configure outbound failed message retry schedule
|
Yes
|
Yes
|
|
Enable/disable non-delivery receipts
|
Yes
|
Yes
|
|
Enable/disable delivery delay notifications
|
Yes
|
Yes
|
|
Smart host SMTP connector to downstream SMTP server
|
Yes
|
Yes
|
|
Smart host individual domains to a downstream SMTP server
|
Yes
|
Yes
|
|
SMTP connector smart host authentication
|
Yes
|
Yes
|
|
Block local addresses
|
Yes
|
Yes
|
Post office level features
|
|
Reverse DNS blacklisting per post office
|
-
|
Yes
|
|
Restrict message throughput per post office
|
-
|
Yes
|
|
Configure service availability per post office
|
-
|
Yes
|
|
Groups
|
Yes
|
Yes
|
|
Quota management
|
Yes
|
Yes
|
Mailbox level features
|
|
Configure service availability per mailbox
|
-
|
Yes
|
|
Mailbox spam rules/filtering
|
-
|
Yes
|
|
Restrict message throughput per mailbox
|
-
|
Yes
|
|
Mailbox redirection (configure via web mail)
|
Yes
|
Yes
|
|
Multiple mailbox addresses
|
Yes
|
Yes
|
|
Auto-responder for mailboxes
|
Yes
|
Yes
|
|
Execute application on e-mail delivery to mailbox
|
Yes
|
Yes
|
Developer/System Tools and Utilities
|
|
Provider migration utility
|
-
|
Yes
|
|
Directory management utility
|
-
|
Yes
|
|
System tray Utility (MEtray)
|
Yes
|
Yes
|
|
Activity monitor
|
Yes
|
Yes
|
|
Diagnostic utility
|
Yes
|
Yes
|
|
Message tracking utility
|
Yes
|
Yes
|
List Server
|
|
Headers and footers can be HTML
|
Yes
|
Yes
|
|
Moderated
|
Yes
|
Yes
|
|
Add header text to e-mails
|
Yes
|
Yes
|
|
Add footer text to e-mails
|
Yes
|
Yes
|
|
Subscribe
|
Yes
|
Yes
|
|
Unsubscribe
|
Yes
|
Yes
|
|
Reply to List
|
Yes
|
Yes
|
|
Force poster to be a member
|
Yes
|
Yes
|
|
Disable a list
|
Yes
|
Yes
|
|
Password protect lists
|
Yes
|
Yes
|
|
List 'Help' commands for users
|
Yes
|
Yes
|
|
Activity logging
|
Yes
|
Yes
|
|
Prefix e-mail subjects
|
Yes
|
Yes
|
|
Import users from a text file
|
Yes
|
Yes
|
|
Configure List Reply To Address
|
Yes
|
Yes
|
Web Administration
|
|
Manage multiple post offices via web administration
|
-
|
Yes
|
|
Search for matching post offices, domains, mailboxes, etc
|
-
|
Yes
|
|
Manage directory
|
-
|
Yes
|
|
Manage mailboxes
|
Yes
|
Yes
|
|
Manage domains
|
Yes
|
Yes
|
|
Manage lists
|
Yes
|
Yes
|
|
Manage groups
|
Yes
|
Yes
|
|
Multiple Language Support (English, French, German, Italian and Spanish)
|
Yes
|
Yes
|
|
Web administration skins
|
Yes
|
Yes
|
|
.NET and ASP web administration
|
Yes
|
Yes
|
Web Mail
|
|
Drag & drop messages into folders
|
Yes
|
Yes
|
|
Virtual message lists that don't require page selection
|
Yes
|
Yes
|
|
Auto-complete for addressing
|
Yes
|
Yes
|
|
Keyboard shortcuts
|
Yes
|
Yes
|
|
Load on demand AJAX tree view on left hand pane
|
Yes
|
Yes
|
|
Right click items for actions (e.g. rename, mark as unread)
|
Yes
|
Yes
|
|
Multi-select items in virtual list without changing pages
|
Yes
|
Yes
|
|
Summary page outlining mailbox status
|
Yes
|
Yes
|
|
Select the page that is displayed on log-in
|
Yes
|
Yes
|
|
Task lists
|
Yes
|
Yes
|
|
Mailbox, calendar and contact sharing
|
-
|
Yes
|
|
Enhanced public folder support
|
-
|
Yes
|
|
Bottom and right side preview mode
|
Yes
|
Yes
|
|
Appointment messages have their own icon
|
Yes
|
Yes
|
|
View images attached to a message in a slideshow
|
Yes
|
Yes
|
|
Download source of message
|
Yes
|
Yes
|
|
Add appointment requests direct to calendar
|
Yes
|
Yes
|
|
Read receipts
|
Yes
|
Yes
|
|
Contact groups
|
Yes
|
Yes
|
|
Edit contact directory details from within web mail
|
-
|
Yes
|
|
Configure web mail layout per domain
|
-
|
Yes
|
|
Configure web mail skin per domain
|
-
|
Yes
|
|
Save message as draft
|
Yes
|
Yes
|
|
Import contacts from Outlook and Outlook Express
|
Yes
|
Yes
|
|
Configure personal filters
|
-
|
Yes
|
|
Change passwords
|
-
|
Yes
|
|
Global contacts
|
-
|
Yes
|
|
Public folders
|
-
|
Yes
|
|
Sub folders
|
Yes
|
Yes
|
|
Mailbox spam rules/filtering
|
-
|
Yes
|
|
Personal calendar
|
Yes
|
Yes
|
|
Personal tasks
|
Yes
|
Yes
|
|
New message notification
|
Yes
|
Yes
|
|
Quota usage display
|
Yes
|
Yes
|
|
Compose/view messages in separate windows
|
Yes
|
Yes
|
|
Skins and re-br /anding
|
Yes
|
Yes
|
|
Personal contacts
|
Yes
|
Yes
|
|
View HTML e-mails
|
Yes
|
Yes
|
|
Compose HTML e-mail messages
|
Yes
|
Yes
|
|
Auto signature
|
Yes
|
Yes
|
|
Mailbox redirection
|
Yes
|
Yes
|
|
POP Retrieval
|
Yes
|
Yes
|
|
Support for various e-mail character sets
|
Yes
|
Yes
|
|
Multi-lingual (English, French, German, Italian, Spanish)
|
Yes
|
Yes
|
|
Print messages
|
Yes
|
Yes
|
|
View message headers
|
Yes
|
Yes
|
|
Spell-checker (multi-lingual)
|
Yes
|
Yes
|
|
Search by subject, content and sender
|
Yes
|
Yes
|