You don't even necessarily need to use HTML to do so; most rich-text mail programs have buttons specifically for inserting an image and making it a link. However, make sure that ads are relevant ...

A link is a word, group of words, or image ... of HTML. Click "Visual" in the toolbar to toggle back to Visual Mode. Use your cursor to highlight the text you wish to convert into a clickable ...

A new infographic from CoSchedule dives into the anatomy of the most clickable headlines–how much time you should actually spend on them, how to put positive or negative spin on them ...