MailManager is the leading Open Source Email Response Management product. It is used by thousands of people in call centers, business and government to help teams deal with large volumes of email to organizational addresses such as info@example.com. MailManager is the leading Open Source Email Response Management product. It is used by thousands of people in call centers, businesses, education and government. It helps teams to deal with large volumes of email to organizational addresses such as info@example.com, sales@example.com or support@example.com. It provides reporting tools, an email search engine and tools for answering email quickly using standard templates and attachments.