What are some alternatives?
MailScanner - MailScanner is a open source email security system design for Linux-based email gateways.
Agile CRM - Agile CRM (Customer relationship management) features modern CRM with marketing automation, social suite & web analytics, allowing small businesses to sell and market like the Fortune 500.
Scrollout F1 - Scrollout is a free and easy to use anti-spam email gateway designed for Linux & Windows administrators without advanced email security experience.
Direct Mail - Email marketing for Mac
Mailwasher - Over 8 million people use MailWasher as their spam filter
Campaigner - Is your email marketing failing to produce the revenue you expect? Learn how to send email campaigns that deliver results with Campaigner. Try our free 30-day trial today.