Question

我将用一个非常基本的例子再试一次。当我使用PHP向电子邮件客户端发送电子邮件时，除了gmail之外我没有问题。当我在Gmail中查看电子邮件时，我看到的只是邮件的代码。 Gmail不会显示HTML。它只显示代码。这是我的剧本：

<?php
$to = "someone@gmail.com";
$subject = "Test HTML E-mail";
$random_hash = md5(date("r", time()));
$mID = md5($to);
$headers = "From: admin@yellowcas.com" . "\n" . "Reply-To: admin@yellowcas.com" . "\n";
$headers .= "Errors-To: someone@yahoo.com" . "\n";
$headers .= "MIME-Version: 1.0" . "\n";
$headers .= "Content-Type: multipart/alternative; boundary=". $random_hash ." ; Message-ID: <" . $mID . ">" . "\n"; 
ob_start();
?>
--<?php echo $random_hash; ?> 
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Hello, Tom!!! 
This is simple text email message.

--<?php echo $random_hash; ?> 
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit

<!doctype html>
<head>
<title>Untitled Document</title>
</head>
<body>
<h2>Hello, Tom!</h2>
<p>This is something with <strong>HTML</strong> formatting.</p>
</body>
</html>

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

<?php
$message = ob_get_clean();
$mail_sent = @mail( $to, $subject, $message, $headers );
echo $mail_sent ? "Mail sent" : "Mail failed";
?>

我在没有DOCTYPE和DOCTYPE的情况下尝试过这个脚本。我不相信HTML有任何问题。我相信gmail由于某种原因没有识别出边界字符串。这是我打开电子邮件时看到的内容：

--111f3d21df6a6eb40a42e9337a600c21
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

Hello, Tom!!!
This is simple text email message.

--111f3d21df6a6eb40a42e9337a600c21
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit

<!doctype html>
<head>
<title>Untitled Document</title>
</head>
<body>
<h2>Hello, Tom!</h2>
<p>This is something with <strong>HTML</strong> formatting.</p>
</body>
</html>

--111f3d21df6a6eb40a42e9337a600c21--

任何人都可以请告诉我为什么gmail会渲染整个邮件而不是编码HTML？好像gmail无法识别边界字符串。我该如何解决这个问题？

作为旁注，是的，这是我在互联网上找到的基本PHP电子邮件脚本。我做了一些修改，但它仍然无法在gmail中工作。所有其他电子邮件客户端都可以正常使用。 请帮助！我在我的智慧结束。谢谢。

当我在Fred -ii-提交的代码示例中添加$ headers行时，gmail呈现了HTML，但它仍然显示了边界字符串和纯文本消息。这就是电子邮件的样子：

- f8451c07b6649388e8938cfa12ea21e6 Content-Type：text / plain; charset = iso-8859-1 Content-Transfer-Encoding：7bit你好，Greg !!!这是简单的文本电子邮件。 --f8451c07b6649388e8938cfa12ea21e6 Content-Type：text / html; charset = iso-8859-1 Content-Transfer-Encoding：7bit
你好，汤姆！
这是 HTML 格式的内容。 --f8451c07b6649388e8938cfa12ea21e6--

我希望这是正确的。

Answer 1

编辑＃4

这是另一个好的版本，似乎更容易使用：

<?php
//define the receiver of the email
$to = 'email@example.com';
//define the subject of the email
$subject = 'Test HTML email';

// Generate a random boundary string
$mime_boundary = '_x'.sha1(time()).'x';

// Using the heredoc syntax to declare the headers
$headers = <<<HEADERS
From: Test <email@example.com>
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="PHP-alt$mime_boundary"
HEADERS;

// Use our boundary string to create plain text and HTML versions
$message = <<<MESSAGE
--PHP-alt$mime_boundary
Content-Type: text/plain; charset="iso-8859-1"
Content-Transfer-Encoding: 7bit

This Is a Plain Text Email

This message has no HTML. http://www.google.com

--PHP-alt$mime_boundary
Content-type: text/html; charset=iso-8859-1
Content-Transfer-Encoding: 7bit

<html>
<body>
<h1>This Is an HTML Email</h1>
<p>
This message is composed in <a href="http://www.google.com">GOOGLE, click here</a>.
</p>
</body>
</html>
--PHP-alt$mime_boundary--
MESSAGE;

// Send the message
if(!mail($to, $subject, $message, $headers))
{
// If the mail function fails, return an error message
echo "Something went wrong!";
}
else
{
// Return a success message if nothing went wrong
echo "Message sent successfully. Check your email!";
}
?>

编辑3

另一种测试方法:(到目前为止，这是更好的方法）

<?php

function send_email(

$to='email@example.com', 
$from='email@example.com', 
$subject='test', 
$html_content='<b>HELLO in HTML bold</b>', 
$text_content='Hi there in plain text', 
$headers='') 

{ 
    # Setup mime boundary
    $mime_boundary = 'Multipart_Boundary_x'.md5(time()).'x';

    $headers  = "MIME-Version: 1.0\r\n";
    $headers .= "Content-Type: multipart/alternative; boundary=\"$mime_boundary\"\r\n";
    $headers .= "Content-Transfer-Encoding: 7bit\r\n";

    $body    = "This is a multi-part message in mime format.\n\n";

    # Add in plain text version
    $body   .= "--$mime_boundary\n";
    $body   .= "Content-Type: text/plain; charset=\"charset=us-ascii\"\n";
    $body   .= "Content-Transfer-Encoding: 7bit\n\n";
    $body   .= $text_content;
    $body   .= "\n\n";

    # Add in HTML version
    $body   .= "--$mime_boundary\n";
    $body   .= "Content-Type: text/html; charset=\"UTF-8\"\n";
    $body   .= "Content-Transfer-Encoding: 7bit\n\n";
    $body   .= $html_content;
    $body   .= "\n\n";

    # Attachments would go here
    # But this whole email thing should be turned into a class to more logically handle attachments, 
    # this function is fine for just dealing with html and text content.

    # End email
    $body   .= "--$mime_boundary--\n"; # <-- Notice trailing --, required to close email body for mime's

    # Finish off headers
    $headers .= "From: $from\r\n";
    $headers .= "X-Sender-IP: $_SERVER[SERVER_ADDR]\r\n";
    $headers .= 'Date: '.date('n/d/Y g:i A')."\r\n";

    # Mail it out
    return mail($to, $subject, $body, $headers);
}
send_email(); // call the function
?>

编辑2

这很有效，只在Gmail中以HTML格式显示，因此理论上应该可以使用纯文本。

<?php

$notice_text = "This is a multi-part message in MIME format.";
$plain_text = "This is a plain text email.\r\nIt is very cool.";
$html_text = "<html><body>This is an <b style='color:purple'>HTML</b>" .
             "text email.\r\nIt is very cool.</body></html>";

$semi_rand = md5(time());
$mime_boundary = "==MULTIPART_BOUNDARY_$semi_rand";
$mime_boundary_header = chr(34) . $mime_boundary . chr(34);

$to = "Me <email@example.com>";
// $bcc = "You <you@you.com>, Them <them@them.com>";
$from = "Him <another@example.com>";
$subject = "My Email";

$body = "$notice_text

--$mime_boundary
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

$plain_text

--$mime_boundary
Content-Type: text/html; charset=us-ascii
Content-Transfer-Encoding: 7bit

$html_text

--$mime_boundary--";

if (@mail($to, $subject, $body, 
    "From: " . $from . "\n" . 
    "bcc: " . $bcc . "\n" . 
    "MIME-Version: 1.0\n" . 
    "Content-Type: multipart/alternative;\n" . 
    "     boundary=" . $mime_boundary_header))
    echo "Email sent successfully.";
else
    echo "Email NOT sent successfully!";

?>

编辑1

试试这个版本:(在任何地方都没有附加代码进行测试）

<?php
$to = "someone@gmail.com";
$subject = "Test HTML E-mail";

$headers = "From: admin@yellowcas.com" . "\n" . "Reply-To: admin@yellowcas.com" . "\r\n";
$headers .= "MIME-Version: 1.0\r\n";

//unique boundary
$boundary = uniqid("HTMLDEMO");

//tell e-mail client this e-mail contains//alternate versions
$headers .= "Content-Type: multipart/mixed; boundary = $boundary\r\n\r\n";

//plain text version of message
$body = "--$boundary\r\n" .
   "Content-Type: text/plain; charset=ISO-8859-1\r\n" .
   "Content-Transfer-Encoding: base64\r\n\r\n";
$body .= chunk_split(base64_encode("

Hello, Tom!!! 
This is simple text email message.

"));

//HTML version of message
$body .= "--$boundary\r\n" .
   "Content-Type: text/html; charset=ISO-8859-1\r\n" .
   "Content-Transfer-Encoding: base64\r\n\r\n";
$body .= chunk_split(base64_encode("

<!doctype html>
<head>
<title>Untitled Document</title>
</head>
<body>
<h2>Hello, Tom!</h2>
<p>This is something with <strong>HTML</strong> formatting.</p>
</body>
</html>


"));
ob_start();

?>

<?php
$message = ob_get_clean();
$mail_sent = mail( $to, $subject, $body, $headers );
echo $mail_sent ? "Mail sent" : "Mail failed";
?>

您需要在初始标题中使用以下内容：

$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";

下面：

$headers .= "MIME-Version: 1.0" . "\n";

根据the manual on PHP.net

经过测试（已成功以HTML格式发送到我的Gmail而不是代码）

<?php
$to = "someone@gmail.com";
$subject = "Test HTML E-mail";
$random_hash = md5(date("r", time()));
$mID = md5($to);
$headers = "From: admin@yellowcas.com" . "\n" . "Reply-To: admin@yellowcas.com" . "\n";
$headers .= "Errors-To: someone@yahoo.com" . "\n";
$headers .= "MIME-Version: 1.0" . "\n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
$headers .= "Content-Type: multipart/alternative; boundary=". $random_hash ." ; Message-ID: <" . $mID . ">" . "\n"; 
ob_start();
?>

// rest of code below...

Answer 2

好吧，我只需添加三行标题即可使其正常工作，因此请尝试一下，让我知道

$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";

// More headers
$headers .= 'From: <example@gmail.com>' . "\r\n";

gmail不会在电子邮件中呈现html

你好，汤姆！

2 个答案:

编辑＃4

编辑3

编辑2

编辑1