Standard Edition is directed towards less-demanding users and is generally easier to install and configure because it comes as a single standalone application.

Professional Edition contains many additional advanced features and is directed towards professionals and enterprises who need enhanced reliability and sophistication it has been designed to offer.

Here's a feature-by-feature comparison between the Standard Edition and the Professional Edition:

	Standard Download... Professional Download... Price $59 $125 Number of mailboxes supported No limit No limit Quick setup, very easy to use Three built-in wizards: newsletter mailing list, discussion list and autoresponder No banners or "sponsor ads" No monthly fee Fully personalized messages Fully automatic operation Send text or HTML e-mail messages Connect to any number of POP3 servers Built-in SMTP server Very fast parallel sending engine Automatic handling of invalid addresses Import email addresses from a file Use any kind of attachments Simple integration with web forms Looping protection Optionally strip binary attachments for virus protection Up to 64 custom fields per subscriber record Easily customizable Fully customizable HTML and text digests Moderated discussion lists Double opt-in Add user-defined headers and footers to the messages SMS support Run as NT service Support for regular expressions Support for backup/restore

Click here for the list of all features...