Here’s where you will find your signature /Users/your name/Library/Mail/V10/MailData
Here’s the code for the new signature.
Content-Transfer-Encoding: 7bit
Content-Type: text/html;
charset=us-ascii
Message-Id: <743C6BBC-12BD-4CA3-8BF0-E85E87244C98>
Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3731.700.6\))
<body>
<p><a href=”https://www.mpbonline.com”><img class=”aligncenter wp-image-244007 size-full” src=”https://www.mpbonline.com/wp-content/uploads/First-Last.jpg” alt=”First-Last” width=”517″ height=”164″ /></a></p>
</body>