E-Signature image in the email: Is it possible to remove the horizontal line?

3: Is it possible to delete the grey- horizontal line in the email ?
I mean the line where you put the signature on.

Unfortunately at this time it would not be possible to do so.

I have checked this and it would be possible if the image was SVG format, but in PNG it means that it is part of a static photo, so the only way to do that would be to change the image itself.

An idea was to hide the part all up to the line for image, which would hide the line, but if someone added anything under the line (like j letter goes for example) that would be hidden as well.