Email::MessageID - Generate world unique message-ids. use Email::MessageID; my $mid = Email::MessageID->new; print "Message-ID: $mid\x0A\x0D"; Message-ids are optional, but highly recommended, headers that identify a message uniquely. This software generates a unique message-id.

Methods
my $mid = Email::MessageID->new; my $new_mid = Email::MessageID->new( host => $myhost ); This class method constructs an Email::Address object containing a unique message-id. You may specify custom "host" and "user" parameters. By default, the "host" is generated from "Sys::Hostname::hostname". By default, the "user" is generated using "Time::HiRes"'s "gettimeofday" and the process ID. Using these values we have the ability to ensure world uniqueness down to a specific process running on a specific host, and the exact time down to six digits of microsecond precision. Email::Address, Time::HiRes, Sys::Hostname, perl. Casey West, <casey@geeknest.com>. Copyright (c) 2004 Casey West. All rights reserved. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.