TestMailer (1.4.4)

Publisher's description of TestMailer

Test Mailer enables you to quickly send an email and monitor or debug all communication with the recipient mail server. There is no need for a smtp server, Test Mailer will act as a mail server itself and lookup the MX records for the recipient. Use the advanced options to create special circumstances and save the communication log to inform postmasters about any configuration problems in their email or mail server setup.