send image as content in php mail

 // (A) MAIL SETTINGS

$mailTo = "receiver_email_address@domain_name";

$mailSubject = "इच्छापूर्ति के लिए मन्त्र सिद्ध माला ";

// (B) MAIL MESSAGE

// HOST THE IMAGE ON YOUR OWN SERVER!

// ALSO REMEMBER TO PROVIDE THE DIRECT LINK JUST-IN-CASE

$img = "https://email.aksharmty.in/common-600.png";

$mailBody = "<a href='https://aksharmty.in/mantra-siddh-mala.php'><img src='$img'></a><br>";

$mailBody .= "अधिक जानकारी के लिए वेबसाइट पर जाएं : https://aksharmty.in/mantra-siddh-mala.php<br>";

// (C) HEADER - HTML MAIL

$from = 'sender@domain_name'; 

$fromName = 'sender name'; 

$mailHead = implode("\r\n", [

  "MIME-Version: 1.0",

  "Content-type: text/html; charset=utf-8",

  "From: $fromName"." <".$from.">"

]);

// (D) SEND

echo mail($mailTo, $mailSubject, $mailBody, $mailHead)

  ? "OK" : "ERROR" ;

?>