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Editorial Team
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Asked: 2026-05-13T22:59:38+00:00

I have a couple of simple forms that send an html-only email. Most clients

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I have a couple of simple forms that send an html-only email. Most clients (Gmail, Lotus Notes 8, hotmail/live, windows live mail, outlook express) receive the emails just fine, but Outlook 2007 does not.

The code looks like this:

$data="
            <html>
                <body>
                    <strong><u>$sub</u></strong><br><br>
                    <strong>Name:</strong> {$_POST["nombre"]}<br><br>
                    <strong>Phone:</strong>{$_POST["telefono"]}<br><br>
                    <strong>Email:</strong> {$_POST["email"]}<br><br>
            <strong>Subject:</strong> {$_POST["asunto"]}<br><br>
                    <strong>Question:</strong> {$_POST["consulta"]}</strong>
                </body>
            </html>";
            $header = "Reply-To: $from\r\n";
            $header .= "From: \"".$_POST["nombre"]."\" <$from>\r\n";
            $header .= "MIME-Version: 1.0\r\n";
            $header .= "Content-Type: text/html; charset=iso-8859-1\r\n";

            $enviado = mail($destino,$sub,$data,$header);

($from is the only part of the message validated)

The message received by the customer looks like this:

Content-Type: text/html; charset=iso-8859-1
From: Consulta de "Boss" <boss@myfirm.com>
Reply-To: boss@myfirm.com
X-Mailer: PHP/

<strong><u>Solicitud de envío de recetas -
CLIENT</u></strong><br><br><strong>Nombre y Apellido:</strong>
Boss<br><br><strong>Email:</strong>
boss@myfirm.com<br><br><br>

Any ideas?

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1 Answer

  1. Editorial Team

    Have you tried sending multipart email, when doing this we never had issues with outlook 2k3 and 2k7 (excepts poor HTML rendering)

    <?php
$header = "From: Sender <sen...@domain.org>\r\n";
$header .= "Reply-to: Sender <blabla...@domain.net>\r\n";
$header .= "X-Mailer: Our Php\r\n";

$boundary = "==String_Boundary_x" .md5(time()). "x\r\n";
$boundary2 = "==String_Boundary2_y" .md5(time()). "y\r\n";

$header .= "MIME-Version: 1.0\r\n";
$header .= "Content-Type: multipart/related;\r\n";
$header .= " type="multipart/alternative";\r\n";
$header .= " boundary="$boundary";\r\n";

$message = "If you read this, your email client doesn't support MIME\r\n";

$message .= "--$boundary\r\n";
$message .= "Content-Type: multipart/alternative;\r\n";
$message .= " boundary="$boundary2";\r\n";

$message .= "--$boundary2\r\n";
$message .= "Content-Type: text/plain; charset=\"iso-8859-1\"\r\n";
$message .= "Content-Transfer-Encoding: 7bit\r\n";
$message .= "Alternative message in plain text format.\r\n";

$message .= "--$boundary2\r\n";
$message .= "Content-Type: text/html; charset=\"iso-8859-1\"\r\n";
$message .= "Content-Transfer-Encoding: 7bit\r\n";
$message .= "<html><body><p>HTML formatted message</p></body></html>";

    You can replace boundaries with whatever you want, but they must be unique.

    For more powerful and flexible email sending in php I suggest to use SwiftMailer

    EDIT : as Outlook 2007 has a really dumb HTML renderer, you can also try fixing your markup, there is a </font> never opened in your example, dunno if it’s the real mail or a typo in question.

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