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Search mailboxes for a particular email
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grepmail - search mailboxes for a particular email Grepmail searches a mailbox for a given regular expression, and returns those emails that match it. Piped input is allowed, and date and size restrictions are supported, as are searches using logical operators. Grepmail also supports a variety of compression formats: gzip, bzip2, lzip, and xz. SOME NOTES perl version: If you plan to use advanced pattern features such as "(?>...)", you will need to make sure that your version of perl supports them. Complex queries: The -E flag allows you to perform complex searches involving logical operators. For example, $email_header =~ /^From: .*\@coppit.org/ && $email =~ /grepmail/i will find all emails which originate from coppit.org (you must escape the "@" sign with a backslash), and which contain the keyword "grepmail" anywhere in the message, in any capitalization. NOTE: -E support is experimental right now. I'm looking for feedback on the following: - Do you like the feature? - Do you like the Perl-based syntax? Is there an alternative which is easier? - How should date and size constraints be integrated? Should they be "variables", a la: "$email =~ /grepmail/ && $date <= 'sep 20 1998' || $size > 50000"? - Should -i, -h, and -b be supported in conjunction with -E? (Where "-h pattern" would mean augmenting the -E pattern with "$email_header =~ /pattern/ && ") - -S ignores signatures. If/when this feature is implemented for -E, should it be "global" for all $email_body matches, or should it be possible to specify this for each $email_body match? For example, one can append an "i" modifier to an individual pattern match to make it case-insensitive. Should there be a standard way of dealing with such "global" pattern matching options on an individual pattern match basis? Message IDs: NOTE: For emails without message ids, grepmail will use Digest::MD5 to compute a hash based on the email header. If you don't have Digest::MD5, grepmail will just use the header itself as the messsage id. The Digest::MD5 checksum takes a little while to compute, but saves a lot of space. Currently there is no easy way to choose space over time. Let me know if this is a problem. MODULE DEPENDENCIES To use this program, you will need to install: - Mail::Mbox::MessageParser: required - Date::Parse: required - Date::Manip: required if you want to search using complex date specifications (-d) - Digest::MD5: not required, but can help grepmail use less memory if you are checking for unique emails (-u) and your emails don't have a Message-Id header To test this module, you will need to install: - Test::More INSTALLATION => On Non-Windows (Unix/Cygwin/etc.) systems: To install this package, change to the directory where you unarchived this distribution and type the following: perl Makefile.PL make make test make install You can install this package into a non-default location by appending one of the following to the "perl Makefile.PL" command: - "PREFIX=/installation/path" (for installation into a custom location), - "INSTALLDIRS=site" (for installation into site-specific Perl directories) - "INSTALLDIRS=perl" (for installation into standard Perl directories). If make test fails, please see the INSTALLATION PROBLEMS section below. => On Windows systems: - Just copy "grepmail" to a place in your path. You may want to rename it "grepmail.pl" if you've associated .pl files with perl.exe. CONFIGURATION You may want to set your MAIL environment variable so that grepmail will know the default location to search for mailboxes. If you are terribly concerned about performance, you may want to modify the value of the variable READ_CHUNK_SIZE located in the code. This variable controls how much text is read from the mailbox at a time. If the value is set to 0, the entire file is read into memory. (There is no user-visible option for setting this value.) You may also want to hack the code to not use Digest::MD5, thereby trading space for time. If you frequently use the same set of flags, you may wish to alias "grepmail" to "grepmail -flags" within your command interpreter (shell). See the documentation for your shell for details on how to do this. INSTALLATION PROBLEMS If "make test" fails, run make test TEST_VERBOSE=1 and see which test(s) are failing. Please email, to the address below, the output files for the test. Also email the output of running the particular subtest with the -D flag. e.g.: ./blib/script/grepmail -D --help > test_name.debug If the first date_manip test case fails, you are in a timezone that Date::Manip does not yet support. You will need to contact the author of Date::Manip. For other bugs, see the section REPORTING BUGS below. DOCUMENTATION Just "perldoc grepmail". After installation on Unix systems, you can also do "man grepmail". RESOURCES The CPAN Page: http://search.cpan.org/dist/grepmail/ The GitHub page: https://github.com/coppit/grepmail/ Bug and feature tracking: http://rt.cpan.org/Public/Dist/Display.html?Name=grepmail When reporting a bug, please attach the output of running grepmail with the -D switch. If the bug is related to processing of a particular mailbox, try to trim the mailbox to the smallest set of emails that still exhibit the problem. Then use the "anonymize_mailbox" program that comes with grepmail to remove any sensitive information, and attach the mailbox to the bug report. COPYRIGHT Copyright (c) 1998-Sep 1 2000 Broc Seib. Copyright (c) Sep 1 2000-2015 David Coppit. All rights reserved, save those granted by the license. See the file LICENSE for licensing terms. AUTHOR David Coppit <email@example.com>