/ 
Email-MessageID-1.401
River stage three • 14 direct dependents • 149 total dependents
/ Email::MessageID

NAME

Email::MessageID - Generate world unique message-ids.

SYNOPSIS

use Email::MessageID;

my $mid = Email::MessageID->new;

print "Message-ID: $mid\x0A\x0D";

DESCRIPTION

Message-ids are optional, but highly recommended, headers that identify a message uniquely. This software generates a unique message-id.

METHODS

new

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.

create_host

my $domain_part = Email::MessageID->create_host;

This method returns the domain part of the message-id.

create_user

my $local_part = Email::MessageID->create_user;

This method returns a unique local part for the message-id. It includes some random data and some predictable data.

in_brackets

The Message-Id header must start and end with angle brackets. This is a common mistake:

header => [
  ...
  'Message-Id' => Email::MessageID->new->as_string,
],

Instead, use in_brackets to get the string inside angle brackets.

SEE ALSO

Email::Address, Time::HiRes, Sys::Hostname, perl.

PERL EMAIL PROJECT

This module is maintained by the Perl Email Project.

http://emailproject.perl.org/wiki/Email::MessageID

AUTHOR

Casey West, <casey@geeknest.com>.

COPYRIGHT

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.