What are some common pitfalls to avoid when sending emails from a PHP application, especially in terms of spam prevention?

One common pitfall to avoid when sending emails from a PHP application is not setting proper headers, which can result in emails being marked as spam. To prevent this, make sure to include headers such as From, Reply-To, and MIME-Version in your email headers. Additionally, avoid sending emails in bulk from a single address, as this can also trigger spam filters. 

// Set proper headers to prevent emails from being marked as spam
$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email.";

$headers = "From: Your Name <yourname@example.com>\r\n";
$headers .= "Reply-To: yourname@example.com\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";

// Send the email
mail($to, $subject, $message, $headers);

Keywords

email sending PHP application spam prevention SPF records DKIM

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