E-mail signatures can be designed without any html knowledge with the help of Sign&Go rich online editor. Signatures can also designed in Microsoft Word and copied back into Sign&Go as a simple solution. In order to need any custom development by using front-end development including HTML/CSS, Sign&Go signature editor supports also front-end development. You can read quick tips for custom development in here.
Yes, Sign&Go supports unlimited number of signature as saved templates and each one can be assigned seperately. For instance you can prepare different email signature design in different languages for globbally distrbuted locations, and users can easily choose within templates
You may use an email client or mobile device which sends messages as plain text. Sign&Go can append a signature in this case. Please ensure that you fill the basic signature in the web administration panel.
You can create unlimited number of signatures and then match the user groups that you create with the signatures you choose.