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Asked: 2026-05-11T10:05:20+00:00

Here’s the script that’s builds/sends the email: $boundary = md5(date(‘U’)); $to = $email; $subject

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Here’s the script that’s builds/sends the email:

$boundary = md5(date('U'));  $to = $email; $subject = 'My Subject';  $headers = 'From: myaddress@mydomain.com' . '\r\n'.            'X-Mailer: PHP/'.phpversion() .'\r\n'.            'MIME-Version: 1.0' . '\r\n'.            'Content-Type: multipart/alternative; boundary=--$boundary'. '\r\n'.            'Content-Transfer-Encoding: 7bit'. '\r\n';  $text = 'You really ought remember the birthdays';      $html = '<html>     <head>       <title>Birthday Reminders for August</title>     </head>     <body>       <p>Here are the birthdays upcoming in August!</p>       <table>         <tr>           <th>Person</th><th>Day</th><th>Month</th><th>Year</th>         </tr>         <tr>           <td>Joe</td><td>3rd</td><td>August</td><td>1970</td>         </tr>         <tr>           <td>Sally</td><td>17th</td><td>August</td><td>1973</td>         </tr>       </table>     </body>     </html>     ';  $message = 'Multipart Message coming up' . '\r\n\r\n'.        '--'.$boundary.        'Content-Type: text/plain; charset=\'iso-8859-1\'' .        'Content-Transfer-Encoding: 7bit'.        $text.         '--'.$boundary.         'Content-Type: text/html; charset=\'iso-8859-1\''.         'Content-Transfer-Encoding: 7bit'.         $html.        '--'.$boundary.'--';    mail('toAddress@example.com', $subject, $message, $headers);

It sends the message just fine, and my recipient receives it, but they get the whole thing in text/plain instead of in multipart/alternative. Viewing the source of the received message gives this (lots of cruft removed):

Delivered-To: myrecipient@example.com Received: by 10.90.100.4 with SMTP id x4cs111413agb;     Wed, 25 Mar 2009 16:39:32 -0700 (PDT) Received: by 10.100.153.6 with SMTP id a6mr85081ane.123.1238024372342;     Wed, 25 Mar 2009 16:39:32 -0700 (PDT) Return-Path: <xxx@xxxx.com> --- snip --- Date: Wed, 25 Mar 2009 17:37:36 -0600 (MDT) Message-Id: <200903252337.n2PNbaw2019541@www.xxxxxxx.com> To: trevor@saturdayplace.com Subject: My Subject From: me@mydomain.com X-Mailer: PHP/4.3.9 MIME-Version: 1.0 Content-Type: text/plain; boundary='--66131caf569f63b24f43d529d8973560' Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 25 Mar 2009 23:38:30.0531 (UTC) FILETIME=[CDC4E530:01C9ADA2] X-TM-AS-Product-Ver: SMEX-8.0.0.1181-5.600.1016-16540.005 X-TM-AS-Result: No--4.921300-8.000000-31 X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No   Multipart Message coming up  --66131caf569f63b24f43d529d8973560 Content-Type: text/plain; charset='iso-8859-1' Content-Transfer-Encoding: 7bit  You really ought remember the birthdays  --66131caf569f63b24f43d529d8973560 Content-Type: text/html; charset='iso-8859-1' Content-Transfer-Encoding: 7bit  <html>     <head>       <title>Birthday Reminders for August</title>     </head>     <body>       <p>Here are the birthdays upcoming in August!</p>       <table>         <tr>           <th>Person</th><th>Day</th><th>Month</th><th>Year</th>         </tr>         <tr>           <td>Joe</td><td>3rd</td><td>August</td><td>1970</td>         </tr>         <tr>           <td>Sally</td><td>17th</td><td>August</td><td>1973</td>         </tr>       </table>     </body>     </html>   --66131caf569f63b24f43d529d8973560--

It looks like the content-type header is getting changed along the way from multipart/alternative to text/plain. I’m no sysadmin, so if this is a sendmail issue I’m in way over my head. Any suggestions?

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1 Answer

  1. The line

    'Content-Type: multipart/alternative; boundary=--$boundary'. '\r\n'.

    should be

    'Content-Type: multipart/alternative; boundary=$boundary'. '\r\n'.

    You don’t include the dashes in the header.

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