How to add HTML code to a single page

Create your contact page in html and copy/paste into dashboard “New Page”
Word press has ‘tinymce’editor installed by default and will accept simple html but not javascript. Try it and save as draft and preview it before publishing.
WordPress strips and reformats html sometimes so you may require a few extra plug ins like “Code Formatting” to preserve your code.
Another way is to upload (FTP) your Contact page as an html page onto your server (into the Directory with your blog domain name) and add a link to it via the ‘Blogroll Links”in your sidebar.

If I misunderstood the question above then maybe you mean adding a php form code using copy/paste and making it work.If the code is in Word Press as an active plug in like an autorespondor plug-in then it will still work in an uploaded html page.Otherwise you have to add the contact page into the autorepondor database.

you simple create a new form via contact form 7 and paste the code to your contact page (it’s really simply code, or i should say it’s just some words), if you want to edit it, you also need to edit from the oontact form 7 setting and it will reflect to your contact page.

Thanks for your replies.
@lzjimmy – this was easier than I thought. For anyone else who has this issue follow the advice given above.