bounceHammer have been downloaded and used by many users and companies since the first release on March 2010 and has been EOL: End Of Life on February 29, 2016. Thanks for using bounceHammer for a long time. We are now providing Sisimai (the successor of bounceHammer, more faster, more higher precision of analysis) as a bounce mail parser library in BSD 2-Clause License.
A bounced email ( simply a bounce ) is a email message from mail server (MTA) informing the sender of another message about a delivery error. It is also called as a returned mail, an error email, and an undelivered mail.
More information about bounced email is described in en.wikipedia.org/wiki/Bounced_e-mail.
A bounced email is created by MTA ( Such as Sendmail, Postfix, and qmail )
automatically when delivery error occurred. Contents of the subject header
of bounced email like followings.
A sender of bounced email is mainly postmaster or MAILER-DAEMON.
You will find names like the followings in From: header of bounced email.
A bounced email is created by mail server program such Sendmail, and contains delivery report in its message body.
bounceHammer reads a bounced email and parse its headers and its message body, then find details about why the delivery failed. The following section is particularly important to find details for bounceHammer.
bounceHammer is a system which parses a bounced email, finds a reason of bounce, classifies a recipient (PC, Webmail, smartphone ). Visit What is bounceHammer ? page to read more information about bounceHammer.