Here's my first stab. 
#! perl

use strict;
use warnings;
use HTML::TokeParser;

my $p = HTML::TokeParser->new("sample.html") || die "Can't open: $!";
my %hash;
while (my $t = $p->get_token){
    next    unless     $t->[0] eq 'S'
            and        $t->[1] eq 'th'
            and        defined $t->[2]{'class'}
            and        $t->[2]{'class'} eq 'DatTh';
            
    my $key = $p->get_text('/th');
    chop $key;
    
    $p->get_tag('td');
    my $value = $p->get_text('/td');
    $value =~ s/^\s*//;
    $value =~ s/\s*\[Add\]\s*$//;
    
    $hash{$key} = $value;
}

open OUT, '>', 'out.txt' or die;
for my $key ( keys %hash ){
    print OUT "$key => $hash{$key}\n"
}
close OUT;

[download]
produces... 
Subject => PMR446
To => sigmund@fastmail.fm
Date => Mon,  9 Aug 2004 10:28 AM  ( 59 mins 50 secs ago )
From => "Delboy" <delboyenterprises@hotmail.com>

[download]
simplified extract from html... 
<table width="100%">
    <tr align="left">
        <th class="DatTh" width="0%">Date&nbsp;</th> 
        <td class="DatTd" width="95%">Mon,  9 Aug 2004 10:28 AM &nbsp;
+<small>( 59 mins 50 secs ago )</small></td> 
        <td class="DatTd" rowspan="3" align="center" valign="top" widt
+h="5%"><font size="-2"><a    href="xxxxxxx">Text&nbsp;view</a><br><b>
+HTML&nbsp;view</b><br><a href="xxxx">Print&nbsp;view</a></font></td>
    </tr>
    <tr align="left">
        <th class="DatTh" width="0%">From&nbsp;</th>
        <td class="DatTd" width="95%">&quot;Delboy&quot; &lt;delboyent
+erprises@hotmail.com&gt; <a title="Add addresses to your address book
+" href="xxxx">[Add]</a></td>
    </tr>
    <tr align="left">
        <th class="DatTh" width="0%">To&nbsp;</th> 
        <td class="DatTd" width="95%">sigmund@fastmail.fm<a    title="
+Add addresses to your address book" href="xxxxx">[Add]</a></td>
    </tr>
    <tr align="left">
        <th class="DatTh" width="0%">Subject&nbsp;</th> 
        <td class="DatTd" width="95%">PMR446</td> 
        <td class="DatTd" align="center" width="5%"><font size="-2"><a
+ href="xxxx">Show&nbsp;full&nbsp;header</a></font></td>
    </tr>
</table>

[download]

In reply to Re: Renaming html email dumps according to sender and date by wfsp
in thread Renaming html email dumps according to sender and date by Sigmund

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.