In fact, many email clients will not read all the different types of HTML available so be aware that your signature might not be seen as much as you'd expect. Some because their workplace does not allow it, or they have a slow connection, or they simply don't want to be tracked by marketing emails (which use tracking pixels inside graphics in the signature). One reason for not using an HTML signature is that many people do not use HTML-enabled email clients. Examine who your target audience is first and foremost.
But before you create an HTML email signature you should be aware that it should only be used if doing so is important to your brand. What has made it more bothersome is the fact that HTML signatures are not available by default.
Most people will agree that the process for creating email signatures on Apple Mail leaves a lot to be desired.
