1and1Mail

1and1Mail is free e-mail marketing software specifically designed for small and medium business worldwide to create, schedule and send personalized mass e-mails, manage e-mail contacts, and design e-mail newsletters.

1and1Mail differentiates itself from other mass mailing software by offering unique features that can greatly boost your e-mail deliverability and lower your e-mail marketing cost. These features include Automatic IP Switcher, Multi-threaded Sending, E-mail Template Downloader, and Multi Account Manager. With 1and1Mail, you are able to not only send more e-mails to your customers per day, but also build a better corporate image with professional and well-designed e-mail templates.

Free Edition can send 50 e-mails at a time.