Smart Work Spaces use MailGust, a dynamic Open Source tool that offers full email newletter functionality. The following is from the MailGust website:

The most exciting feature is that Mailgust is three softwares in one

::Mailing list manager ::Newsletter distribution tool ::Message Board

Existing features detailed

• Very easy to install
• Multiple lists
• Different admins for different lists
• Different web access settings for different lists:

::Free for every visitor ::Only for subscribers ::Only for admins

• Different write permission settings for different lists:

::Free for anybody ::Only for subscribers (mailing list style) ::Only for admins (newsletter style)

• Different approval settings for different lists:

::Posts will be delivered and appear immediatelly ::Admins have to approve posts

• Different membership types for different lists:

::Anyone can join ::Admin has to approve subscriptions ::Only admin can invite members

• You can set if you want mailing lists or message boards:

::Message Board only -- messages will not delivered as mail, will be stored on the web interface only ::Mails only -- messages will not archived on the web interface only delivered as mails ::Messages will be delivered as mails, and the fully functional web interface can be used as well

• Track Opens / Reads -- Track how many readers open / read your mailingand who does this
• Link tracking -- Track who and when clicked on a link sent in a mail
• Attachment handling
• Subscriptions with email checking
• Web interface with message archive
• Subscriber list import and export
• Search
• Notification management
• User management
• HTML newsletters
• Email blocking
• No timeouts

For a view of the MailGust interface: MailGust

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