These companies can create and produce designs, banners and other visual content.
Bannersnack is an online platform that allows you to create HTML5 banners yourself.
Handy site to make a good Favicon + associated code.
Bannerbazen is an agency that specializes in Banners and other media for online advertising.
This favicon generator also works with text and emoji.
Bannermaker is a design agency specialized in banners.
A very extensive favicon generator that also makes many different types of code.
Bannermaken.nl is an online environment in which you can create HTML5 banners yourself.
A complete list of all emoji and what they look like on different devices and browsers.
Overview of all emoji with different skin colors, all usable in HTML.
All Emoji with HTML codes.
A handy tool with which you can optimize your newsletters for the Gmail promotions.