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Sending HTML emails with attachment with PHP

Sending HTML emails with attachment with PHP

This function allows you to send an HTML email with a file attachment. To do this it’s necessary to read…

Gennaio 10, 2010

This function allows you to send an HTML email with a file attachment. To do this it’s necessary to read the file and encode it with base 64 and split it in small chunks, and write everything using mail headers.

The $fileatt parameter identify the filename to be sent. The $replyto is optional and allows you to specify a different reply-to address. The $from parameter specify the sender address. The other parameters are the same of the ones of the mail php function.

It returns true if succeeded.

function mail_file( $to, $subject, $messagehtml, $from, $fileatt, $replyto="" ) {
		// handles mime type for better receiving
		$ext = strrchr( $fileatt , '.');
		$ftype = "";
		if ($ext == ".doc") $ftype = "application/msword";
		if ($ext == ".jpg") $ftype = "image/jpeg";
		if ($ext == ".gif") $ftype = "image/gif";
		if ($ext == ".zip") $ftype = "application/zip";
		if ($ext == ".pdf") $ftype = "application/pdf";
		if ($ftype=="") $ftype = "application/octet-stream";
		// read file into $data var
		$file = fopen($fileatt, "rb");
		$data = fread($file,  filesize( $fileatt ) );

		// split the file into chunks for attaching
		$content = chunk_split(base64_encode($data));
		$uid = md5(uniqid(time()));

		// build the headers for attachment and html
		$h = "From: $from\r\n";
		if ($replyto) $h .= "Reply-To: ".$replyto."\r\n";
		$h .= "MIME-Version: 1.0\r\n";
		$h .= "Content-Type: multipart/mixed; boundary=\"".$uid."\"\r\n\r\n";
		$h .= "This is a multi-part message in MIME format.\r\n";
		$h .= "--".$uid."\r\n";
		$h .= "Content-type:text/html; charset=iso-8859-1\r\n";
		$h .= "Content-Transfer-Encoding: 7bit\r\n\r\n";
		$h .= $messagehtml."\r\n\r\n";
		$h .= "--".$uid."\r\n";
		$h .= "Content-Type: ".$ftype."; name=\"".basename($fileatt)."\"\r\n";
		$h .= "Content-Transfer-Encoding: base64\r\n";
		$h .= "Content-Disposition: attachment; filename=\"".basename($fileatt)."\"\r\n\r\n";
		$h .= $content."\r\n\r\n";
		$h .= "--".$uid."--";

		// send mail
		return mail( $to, $subject, strip_tags($messagehtml), str_replace("\r\n","\n",$h) ) ;



PHP expert. Wordpress plugin and theme developer. Father, Maker, Arduino and ESP8266 enthusiast.

Comments on “Sending HTML emails with attachment with PHP”

15 thoughts

  1. lee murray ha detto:

    the problem with this script is that you can only send one attachment at a time.

  2. Vadim ha detto:

    Thank you, this is exactly what I have needed.

  3. Tim ha detto:

    This is excellent thanks.

  4. Dan ha detto:

    Excellent, thanks for the snippet well done.

  5. Ayo ha detto:

    This is absolutely beatiful. It’s a perfect code. The 1st of its kind that I’ve found on these Php mail/attachment issue. I’m so glad I stumbled on this website/post.
    Imagine I’ve been frustrated for over 1 month searching online a code that could do this for me.
    Thanks and keep it up!

  6. sudeep ha detto:


  7. Hemant Vaniya ha detto:

    Thank you very much, it is working excellent.

  8. az ha detto:

    a bit shitty – no file validation

  9. angel16mk ha detto:

    what does ‘rb’means in the 13-th row?

  10. Giulio Pons ha detto:

    rb means read for binary files, such as jpegs.

  11. calady ha detto:

    guys u need to help me coz i think am running out.i try to design a website where there is a button when clicked is supposed to attach a file to a website and i dont know where to start

  12. Pragnesh Karia ha detto:

    File is attached , but blank attachment.
    Is there any code missing?

  13. Norm Jurgen ha detto:

    You’re wonderful! Thank you for sharing your mail_file function.

  14. Tim B ha detto:

    The line that defines $htmlMsg had the surrounding html and body tags stripped off during the upload.

Comments are closed


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