analyses mailing list traffic, and produces real-time reports on traffic, categorised by time or by author. It's used in production for the Hampshire Linux Users Group mailing list statistics
Couriergraph is a very simple mail statistics RRDtool frontend for Postfix that produces daily, weekly, monthly and yearly graphs of Courier's POP3, IMAP, POP3s and IMAPs logins.
an Internet mailing list statistics package. It can be used by list owners to generate stats about their lists in text as well as in HTML format, suitable for posting on the web. Listat is written in Perl
generates various statistical charts from a bunch of mail messages. The code for generating a certain type of chart is plugged into the program
generates a CLF (Common Logfile Format) file from a bunch of mails. It interprets a mail as a hit on a web site
logs incoming emails in either common or combined log file format. You can then use a www log analyzer to generate statistics about your email traffic
displays hierarchies from a flat Maildir structure in the Courier style (that is, subfolders are named .Folder.Subfolder.) It displays a full count of messages, the number of unread messages and can be told to only provide a summary of the statistics thereof
Mailgraph is a very simple mail statistics RRDtool frontend for Postfix that produces daily, weekly, monthly and yearly graphs of received/sent and bounced/rejected mail.
Mailwatch is a program to analyze mail moving through a mailing list. As each message is received, it gathers a summary of the message and stores it into a log. Read more
a suite that currently consists of two programs, Postal and Rabid. Postal (the mad postman) is a program that will deliver mail as fast as possible via the SMTP protocol to test mail server performance. Rabid (the mad Biff) will eat mail via the POP protocol as fast as possible and measure POP server performance
a simple to use set of scripts to generate reports against your procmail log file. Proclog reports various statistics and can be run from the command line or as a X Windows GUI
Sendmail Analyzer is a Perl script reporting full HTML and graph sendmail usage reports. It reports statistics on inbound, outbound, and largest messages, senders and recipients, relays, domains, and complete mailboxes usage (if your country's laws allow it). Statistics are generated per hour, day, month, and year. Graphs are in PNG format. It can also report virus and spam counts.
Sendmailizer performs MTA log file analysis and generates mail use reports, with general stats and statistics per user. It has been tested with sendmail logs but It'll support smail, qmail, and other popular MTA log file formats.