What kind of forms can I create with an email form builder?

Email form is a term that describes all the online web forms which automatically send the form owner an email (containing the data entered) upon each form submission.
a common email form is a contact form. This email form is used to communicate with the site users. It enables the users to get in touch with the site owner and the site owner to be aware of things.
Another kind of common email form is an order form. This type of email form allows the form owner to offer his products over the web.
An invitation form is used to track people’s expected event attendance. It is used to to inform people of an upcoming event and collect their comments and confirmations regarding their attendance.
A support form is used in many technical related issues in websites and it allows the users to ask for specific assistance and describe their problems in length.
In short, Email forms are used on a large scale and are very important for keeping track of what is going on in your website. Other commonly used email forms are: polls, surveys, rsvp, feedback forms etc.