1-) contact icons are structured with column shortcodes, you can divide them to 3 equal columns, please check out Documentation > Shortcodes > columns for more about using columns.
2-) you can just select the “email me” text and link it to “mailto:yourmail@server.com” in your content editor.
Hi again, shortcodes parameters doesn’t support html elements, only plain text. But you can use plain html code instead, switch to the Text tab of your content editor and replace shortcode with this html markup;