You have seen the power of standard forms. However, there are numerous restrictions and a lot of things can only be done with workarounds. As usual with TYPO3, there is an extension that can make your work with forms a lot easier. The MailformPlus extension can simultaneously send form data to a number of email adresses; you can insert JavaScript code for validation, form fields can be automatically populated with the information of the front-end user, and input fields can be created dynamically. The biggest advantage is that you have the option of using your own HTML forms. If you already own a form that was designed on an HTML/CSS foundation, you are probably reluctant to create it again for TYPO3.
After installing MailformPlus, you can run the first test.
Set up a new content element of the General Plugin type on the page that will be displaying the new form.
Under Plugin select mailformplus. You can, but do not have to, define the heading.
Now generate an HTML form with the...