PHP Mail Multipart Showing Blank in Yahoo

Posted on 2009-05-07
Last Modified: 2012-05-06
I have a multi-part email that I am sending off, I have tested it in Hotmail, Thunderbird, Outlook and Yahoo.  It works fine in all but Yahoo.  In Yahoo it is coming through but blank.  I have played with the headers a bit and if I leave the "Content-Type" blank it will come through raw.  If I included the Content-Type header it will come through blank.

I had read that the boundary in the header needed to be surrounded by double quotes so I added those, that didn't.  Here is the header from Yahoo where it is coming through blank, it looks fine to me.  Blow is the full code, I am sure I am missing something very simple but this is a real big problem.

~~~~~~~~~~~~~~~~~~Bad Yahoo Header~~~~~~~~~~~~~~~~~
From XXXXX Thu May  7 06:27:37 2009
Return-Path: <>
Authentication-Results:; domainkeys=neutral (no sig);; dkim=neutral (no  sig)
Received: from  (EHLO (
  by with SMTP; Thu, 07 May 2009 06:27:38 -0700
Received: from (localhost [])
      by (SMTP Server) with ESMTP id B4B9C403AC;
      Thu,  7 May 2009 09:27:37 -0400 (EDT)
Received: by (Authenticated sender: with ESMTPA id A9A054039F;
      Thu,  7 May 2009 09:27:37 -0400 (EDT)
From: xxxxxxxxx <>
Subject: Subject
Content-Type: multipart/alternative; boundary="PHP-alt-22dc05556024f4de66cfa8490508b585"
Date: Thu, 07 May 2009 08:27:37 -0500
Message-ID: <>
Content-Length: 3829


//so we use the MD5 algorithm to generate a random hash

$random_hash = md5(date('r', time())); 

//define the receiver of the email

$subject = "Subject";

$headers["From"] = "xxxx <>";

$hearder["Reply-To"] = "xxx <>";

$headers["Return-Path"] = "";

$headers["To"] = $RecipientEmail;

$headers["Subject"] = $subject;

//add boundary string and mime type specification

//$headers["Content-Type"] = "multipart/alternative; boundary=\"PHP-alt-".$random_hash."\"";

$headers["Date"] = date('r');

    $retArray = "";

	$theMSGID = $retArray;

	$theMSGID = explode("@", $theMSGID);

	$theMSGID = "<".md5($theMSGID[0]).">";

$headers["Message-ID"] = $theMSGID; 

$headers["X-Mailer"] = "PHP v".phpversion();

$headers["X-Priority"] = "3";

//read the atachment file contents into a string,

//encode it with MIME base64,

//and split it into smaller chunks

//define the body of the message.

ob_start(); //Turn on output buffering


--PHP-alt-<?php echo $random_hash;?>


Content-Type: text/plain; charset=iso-8859-1

Content-Transfer-Encoding: 7bit

Some simple text

--PHP-alt-<?php echo $random_hash; ?>

Content-Type: text/html; charset="iso-8859-1"

Content-Transfer-Encoding: 7bit



            <table width=770 cellpadding=5 cellspacing=0>


            	<td width=375 rowspan=2>some simple html






--PHP-alt-<?php echo $random_hash; ?>--


//copy current buffer contents into $message variable and delete current output buffer

$message = ob_get_clean();

//send the email


$mail_object =& Mail::factory("smtp", $smtpinfo);

$RecipientEmail .= "," . "";

$mail_object->send($RecipientEmail, $headers, $message);


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Question by:pmessana
1 Comment

Accepted Solution

pmessana earned 0 total points
ID: 24328750
Wow, this was a simple one and I am surprised that it wasn't answered before I figured it out.  The parsing after an echo was muffed up.

--PHP-alt-<?php echo $random_hash; ?>
Content-Type: text/html; charset="iso-8859-1"

needed to be

--PHP-alt-<?php echo $random_hash; ?>

Content-Type: text/html; charset="iso-8859-1"

The extra line break is necessary and fixes the problem, without it it is merging both lines together and thus making the boundary invalid.


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