How to Fix garbled Text When Using mb_send_mail? Practical Methods to Avoid It

gitbox 2025-09-04

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<p><hr></p>
<p><h1>How to Fix garbled Text When Using mb_send_mail? Practical Methods to Avoid It</h1></p>
<p><p>When using PHP's <code>mb_send_mail

Then use this encoded subject in mb_send_mail:

mb_send_mail($to, $encoded_subject, $message, $headers);

4. HTML Emails and Attachments

If sending HTML emails, you need to set Content-Type to text/html:

$headers .= "Content-Type: text/html; charset=UTF-8\r\n";

When sending attachments, pay extra attention to MIME boundaries and encoding methods, otherwise attachment names or content may appear garbled.

5. Common Precautions

Ensure the PHP script file itself is UTF-8 encoded without BOM.
Do not mix multiple character sets within the email content.
If using third-party libraries (like PHPMailer), they usually handle encoding automatically, making it more reliable.

Conclusion

You can effectively prevent garbled text when sending emails with mb_send_mail by following these three steps:

Set the correct internal encoding with mb_internal_encoding("UTF-8").
Specify the charset in the email headers with charset=UTF-8.
Use mb_encode_mimeheader to encode Chinese subjects.

Once you master these methods, you can confidently send Chinese emails without worrying about garbled text.

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// PHP part at the end of the article, unrelated to the main content
echo "Article generation completed.";
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