What best practices can be implemented to prevent PHP scripts from being flagged as spam by email providers?

To prevent PHP scripts from being flagged as spam by email providers, it is important to ensure that the email content is well-formatted, includes relevant information, and does not contain any suspicious or spam-like content. Additionally, setting up proper authentication, using a reputable email service provider, and avoiding sending bulk emails from a single IP address can also help prevent being flagged as spam. 

// Example PHP code snippet to prevent email from being flagged as spam

$to = "recipient@example.com";
$subject = "Important Message";
$message = "This is a test email to prevent being flagged as spam.";
$headers = "From: sender@example.com\r\n";
$headers .= "Content-Type: text/html; charset=ISO-8859-1\r\n";

// Use a reputable email service provider's SMTP server for sending emails
ini_set("SMTP", "smtp.example.com");
ini_set("smtp_port", "25");

// Send the email using PHP's mail() function
mail($to, $subject, $message, $headers);

Keywords

email deliverability SPF records DKIM DMARC email headers

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