Email

Robust Webmail Client that is as powerful as any desktop email client
HTML rich emails that support images and videos
Complete synchronization with desktop and mobile clients
Request Read receipts (per email or setting to enable for all)
Request Delivery receipts (per email or setting to enable for all)
"Disposable" addressing by folder -- Create one-time use email addresses that are active for a specific amount of time for things like free trial sign-ups, newsletters, etc.
Add/create a task from an email
Ability to share email folders (parents and children) individually with domain users
View an email’s text, raw content, and header
Support for nested folders
Ability to move, rename and delete email folders
Automatic and manual saving of Drafts
Warning for common mistakes prior to sending messages (e.g. no subject, missing attachments, etc.)
Ability to use To address for replies
Choose Default From Address and Reply-To Email address
Plus Addressing to help organize newsletters, etc.
System, domain or user level folder auto-clean rules
Automatic forwarding to one or multiple email addresses
Catch-all alias
Ability to link files from cloud storage -- SmarterMail’s File Storage, Dropbox, OneDrive, etc.
Send / receive from email and domain alias addresses
Centralize email accounts from different providers within a single interface (SMTP Accounts and Email Retrieval)
Support for Autoresponders, including the ability to set different autoresponders for internal users, contacts or domain, set date ranges, frequency, etc.
Robust Content Filtering rules
Contextual shortcut for adding / updating filters
Domain or user Trusted / Blocked Senders
System, domain or user level spam filtering actions (move to junk, delete, mark as spam, etc)
Create and use multiple signatures
Set Delete action (move to folder, etc.)
Set text encoding
Set message priority
Ability to sort and filter by common items like: read/unread, emails with attachments, messages linked to tasks, flagged messages, etc.
Forward multiple emails as attachments
Help against phishing – indications of Trusted Senders, full email address shown if not trusted
Ability to hide images from external website
Automatic blocking of harmful scripts present in messages

Calendars

Attendee availability
Multiple Calendar support
Ability to share primary and secondary calendars with domain users
Subscribe to internet calendars
Domain or user Calendar auto-clean
Create appointments based off of specific time zones
Conference room scheduling
Domain calendaring for things like company holidays, PTO calendars, payroll calendars, etc.
Import/export ICS file
Categorize appointments for primary and secondary calendars
See Task start and due dates on a user's calendar
Ability to view personal and shared calendars concurrently or separately
Various views (e.g. Agenda, Month, Week, etc.)
Set a primary or secondary calendar as default
Complete synchronization with desktop and mobile clients

Contacts / Address Books

Grid view or card view
Import/Export VCard or CSV
Categorize contacts from primary and secondary folders
Multiple phone numbers and email addresses
Global Address List (ability to allow users to opt out)
Ability to show aliases and mailing lists in GAL
Multiple folder support
Ability to view personal and shared contacts concurrently or separately
Ability to share primary and secondary contact folders with domain users
Set a primary or secondary contact folder as default
Shortcut to add a contact from Email view
Shortcut to email a contact (or group of contacts) from Contacts view
Shortcut to send one or more contacts’ VCards via email
Supports contact properties from popular clients like Microsoft Outlook and Apple Contacts
Support for Apple’s contact groups (client-side only)
Complete synchronization with desktop and mobile clients

Group Chat

XMPP support for syncing to desktop and mobile clients (Adium, Digsby, IM+, etc.)
Domain chat search
Archiving for HIPAA and Sarbanes Oxley compliance
Audio and video chat
File sharing with previews
Offline messaging within the webmail client
Ability to use aliases as rooms
User availability (online, offline, away)
Download chat history
Ability to enable/disable per domain or per user
All communication is kept within your server/domain
Can eliminate the need for third-party products/services like #Slack

Team Workspaces

Audio and video support for up to 8 individual users
Password protected Workspaces
Guest access
Text chat for unlimited users
File sharing/storage by Workspace (Separated from standard File Storage)
Ability to restrict file sharing permissions to organizer, domain users or everyone
Shareable links to a Workspace to allow for the participation of users outside your domain
Can be used in conjunction with Calendar appointments/invites
Ability to set the video quality
Input/output device management
Ability to see previous workspaces -- live chat, shared files, etc.
All communication is kept within your server/domain
Can eliminate the need for third-party conferencing products/services like GoToMeeting or Zoom

Tasks

Grid view or card view
Task start and due dates can be added to your Calendar
Set Status (Canceled, Not Started, Completed, In Progress)
Set the Priority level (1 - 10)
Manage/track completion percentage
HTML editor for Task description
Set reminders for Task due dates/times
Task Categories for primary and secondary folders
Multiple folder support
Ability to view personal and shared tasks concurrently or separately
Ability to share primary and secondary Task folders with domain users
Set a primary or secondary Task folder as the default
Create a Task from email
Complete synchronization with desktop and mobile clients

Notes

Colour coding to help with organization
HTML editor for Note description
Support images and video
Import Notes in CSV format
Grid view or card view
Category support for primary and secondary folders
Multiple folder support
Ability to view personal and shared Notes concurrently or separately
Ability to share primary and secondary task folders with domain users
Set a primary or secondary Notes folder as the default
Complete synchronization with desktop and mobile clients

Web Interface (Webmail Client)

A robust browser-based client that matches features available in any desktop email client
Compatible with any modern browser
Responsive design for both desktop and mobile compatibility
Light or dark theme
Standard and Advanced Search
Preview message attachments
Notifications for shares, appointment reminders, events etc.
Automatic attachment/removal of shared items
Ability to customize login page for system-wide or per domain
Thumbnails for image file attachments
News Feeds section - add/subscribe to news feeds and review directly from webmail
Download all attachments as .ZIP
Upload attachments in the background
File storage linking PLUS the ability to link files from services such as Dropbox, OneDrive, etc.
Automatically save as draft
Follow-up flagging
Linked emails and tasks
Advanced content filtering
Advanced spam filtering rules
User-level auto-clean
Support for multiple languages
Email address auto-complete similar to Microsoft Outlook
Import and export contacts
Support for user and domain aliases
Multiple signatures support
Multiple identity/SMTP support

Collaboration

Sharing of primary and secondary email folders
Sharing of primary and secondary Calendars
Sharing of primary and secondary contacts
Sharing of primary and secondary Tasks
Sharing of primary and secondary Notes
Team Workspaces for audio/video conferencing for team-wide collaboration, within or outside a domain
Group Chat for audio/video/text chat for domain users
Automatic sharing of items/removal of shares
Synchronization of shares with desktop and mobile clients
Ability to use Aliases or User Groups for group messaging and sharing

File Storage

Share links to files versus adding attachments -- eliminates sending/file size limits
Blacklist certain file types/extensions
Previews available for certain file types -- icons for PDFs, etc.
Multiple folder support
Workspace and Group Chat files stored separately
Ability to password-protect shared links
Ability to set a time limit for link/download availability
Set public/private availability
Connect to third-party services such as Dropbox and OneDrive (including the ability to connect using School/Work Account)

Mailing Lists

Bounce detection
Automatic removal of subscribers on bounces
Optional double opt-in
Subscriber custom fields
Friendly unsubscribe links in messages
Common subscriber database for all mailing lists
Merge variables and custom fields into messages (mail merge)
Toggle auto-generated response to mailing list commands
Enhanced mailing list compose with attachments
Customized command messages
Mail logging per subscriber
Throttling of mailing lists

Antispam Measures

Configurable and manageable options, including content filter bounces, max message size to scan, enabling SRS when forwarding, etc.
Support for Message Sniffer add-on
Support for Cyren Premium Antispam add-on
Incoming and outbound spam checking
Message retrieval via POP and IMAP (outgoing messages only)
Spam checking on POP3 message retrieval
Outgoing spammer detection and limiting
SpamAssassin-based Pattern Matching Engine
Support for distributed SpamAssassin servers (Linux or Windows)
SPF record checking
DKIM support
DMARC support
RBL/URIBL listing detection
Ability to add and weigh custom RBLs/URIBLs
Reverse DNS checking
Greylisting (based on IP, sender location, spam weight, etc.)
Configurable spam weights for system, domain and users
Configurable spam headers
Configurable and manageable Greylist options
Trusted senders
Require SMTP authentication for outgoing messages
Support for Declude
Allow Domain Administrators to override Actions
IP Bypassing for spam checks and/or greylisting
Greylist Filtering for excluding greylisting based on IP
SMTP Blocking
System-level Trusted Senders (domains and/or email addresses)
Compatible with third-party antispam solutions, services and appliances

Antivirus

Support for Cyren Zero-hour Outbreak Detection add-on
Out-of-the-box ClamAV
Support for third-party command-line antivirus solutions
Support for a remote ClamAV server (Linux or Windows)
Virus quarantine (outgoing messages only)

Security/Attack Prevention

Incoming and outgoing TLS
2-Step Authentication, including support for email recovery or authentication clients (e.g. Microsoft or Google Authenticator)
Incoming and outgoing SSL
Active Directory Authentication
Optional alternate SMTP port
SMTP authentication by domain
Restrict administrator access via IP
Brute force detection for Webmail
Manual and automatic IP whitelisting/blacklisting
Automatic harvest attack prevention
Automatic denial of service prevention
Malicious script filtering in webmail
Throttle user and domain activity
Throttle incoming bounces to prevent saturation
Domain or user-based throttling
Events and Notifications
Event-driven architecture
Notification profiles
Configurable system, domain and user events
Assign actions to events (e.g. command-line, notifications, etc.)
Default notification to all users when disk quotas are reached

Mail Server Protocols

Microsoft Exchange ActiveSync (EAS) (Optional add-on)
Microsoft MAPI/Exchange Web Services (EWS) (Optional add-on)
SMTP
IMAP and IMAP IDLE
POP3
LDAP
CalDAV
CardDAV
XMPP

Migration and Converters

Built-in mailbox migration for email, calendars, contacts and tasks from a variety of mail providers including Exchange, Office365 and more
Mail server converters for a variety of competitive products: Ipswitch iMail, Icewarp, MailEnable, and Mailmax

Automation (Web Services/SOAP)

SmarterMail is 100% API-driven meaning virtually every feature and function within all areas of SmarterMail is available for integration/automation by third-party developers
Pre-built, open-source integrations/modules for several popular control panels such as Plesk and WHMCS
All web services fully documented