email - 为什么我的网站电子邮件会进入垃圾邮件箱？

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我的网站发送的所有电子邮件都将发送到 Gmail 中的垃圾邮件箱(我尚未测试其他电子邮件服务器)。

我正在使用我自己的域(通过 Google Apps)通过 Gmail 发送电子邮件。我使用 PHPMailer 发送电子邮件图书馆:

$mail = new PHPMailer();
$mail->IsSMTP();
$mail->SMTPAuth = true;
$mail->SMTPSecure = "ssl";
$mail->Host = "smtp.gmail.com";
$mail->Port = 465;
$mail->Username = "myuser@example.com";
$mail->Password = "mypassword";
$mail->From = "noreply@example.com";
$mail->FromName = $websiteName;
$mail->Subject = $subject;
$mail->AddAddress($to, "Client");
if ($html) {
    $mail->MsgHTML($content);
    $mail->AltBody = strip_tags($content);
    $mail->IsHTML(true);
} else {
    $mail->Body = $content;
}
if (isset($options['content-type'])) {
    $mail->ContentType = $options['content-type'];
}
if (isset($options['charset'])) {
    $mail->CharSet = $options['charset'];
}

return $mail->Send();

电子邮件按预期发送，但总是落入垃圾邮件箱。它发生在包含 HTML 的电子邮件和像这样的原始文本的电子邮件中:

Hello John Smith,

Thank you very much for trusting us.

To finish your purchase you should deposit XX USD to the account number:

IBAN XXXX - XXXX XXXX XX XX XXXXXX

Once we receive your transfer, we will activate your license and send all documents by e-mail (a copy of the contract, invoice, user guide concerning the application). You have 15 days to review all the material and the application itself and if you are not fully satisfied with the product you purchased, we will refund your money.

If you need some agent's help you can reply this email.

Greetings

那么这条消息可能包含一些可以激活垃圾邮件过滤器的词，但它也会发生在这样的消息中:

Hello

You have a new message in your inbox:

Meeting about next holidays (17:40-18:20).

We hope to see you soon!

http://example.com/

怎么了？通过 gmail 发送电子邮件而不受惩罚的最佳策略是什么？

Answer 1

确保您有与您的域相关联的 SPF 记录，请查看此处:http://support.google.com/a/bin/answer.py?hl=en-uk&hlrm=en&answer=33786