Clone
The best way to create a new signature is to clone a signature that is already in use. Use this clone as the foundation of your new signature.
Edit the Cloned Signature
One Thing to Note
We suggest uploading images with dimensions twice as large as those specified in the HTML. For instance, if the HTML indicates an image width of "120px" upload the image in the Images section (located under Marketing > Images) with a width of 240 pixels for optimal retina resolution. If the uploaded image has a height of 100 pixels, you should adjust the HTML height attribute to "50" to maintain the image's proportions.