What are the common pitfalls when sending emails in PHP using UTF-8 encoding?

Common pitfalls when sending emails in PHP using UTF-8 encoding include not setting the proper Content-Type header, not encoding the subject and body correctly, and not handling special characters properly. To solve these issues, make sure to set the Content-Type header to indicate UTF-8 encoding, use mb_encode_mimeheader() to encode the subject, and use mb_encode_mimeheader() or mb_encode_mimeheader() to encode the body. 

// Set the Content-Type header to indicate UTF-8 encoding
$headers = 'Content-Type: text/plain; charset=UTF-8' . "\r\n";

// Encode the subject using mb_encode_mimeheader()
$subject = 'Subject with special characters';
$subject = mb_encode_mimeheader($subject, 'UTF-8');

// Encode the body using mb_encode_mimeheader() or mb_encode_mimeheader()
$body = 'Body with special characters';
$body = mb_encode_mimeheader($body, 'UTF-8');

// Send the email
mail('recipient@example.com', $subject, $body, $headers);

Keywords

UTF-8 encoding PHP mail function character encoding MIME type email headers

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