Perl

Set the X-Mailer Header of an Email

Demonstrates the Chilkat Email.Mailer property, which identifies the email software that sent the email. It corresponds to the MIME X-Mailer header. This example sets the mailer string and shows it in the generated MIME.

Background: X-Mailer is an optional, informational header — the X- prefix marks it as non-standard — that names the program used to compose or send the message. Mail servers do not require it and it has no effect on delivery; it is mainly useful for diagnostics and analytics. Because it is self-reported, it is trivially spoofable and should never be relied on for security decisions.

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Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

# Demonstrates the Email.Mailer property, which identifies the email software
# that sent the email.  This corresponds to the MIME X-Mailer header.

my $email = Chilkat2::Email->new;

$email->Mailer('My Custom Mailer 1.0');

print 'Mailer = ', $email->Mailer, "\n";

# The X-Mailer header appears in the generated MIME.
print $email->GetMime(), "\n";