Html indhold i SENDMAIL

Hvordan laver jeg en html mail med sendmail?

Mit script ser sådan her ud:

#!/usr/bin/perl

print "Content-type:text/html\n\n";

my $afsender_navn = "Mig";
my $afsender_epost = "mig\@test.dk";
my $modtager_navn = "Dig";
my $modtager_epost = "dig\@test.dk";
my $emne = "Emne";
my $epost_indhold = "Indhold i mailen";

open(SENDMAIL, "|/usr/sbin/sendmail -t") || die "Cannot open sendmail";
print SENDMAIL "From: $afsender_navn <$afsender_epost>\n";
print SENDMAIL "To: $modtager_navn <$modtager_epost>\n";
print SENDMAIL "Subject: $emne\n\n";
print SENDMAIL "$epost_indhold\n\n";
close(SENDMAIL);

print "Done.";