A form is a digital tool that uses HTML or JavaScript to get fixed or embedded on to a landing page or a website with a view to get you the email addresses and the names of the visitors that show interest in your offers.  A form is a small box that is needed to collect the basic information about a prospect.  Forms are installed onto a landing page to build leads to your business.  Hence they assist in lead generation aspect of email marketing.  Contact forms are also used by the marketer to enable the visitors reach him with ease.

Forms are sometimes pop-ups as well intented for the same purpose mentioned above.  Forms are also used to collect subscribers to your newsletters, to collect feedback about your product or service or to register for an event like a Webinar or a YouTube video show.  Email marketing forms are powerful marketing tools in your process of list building.