When you select the embedded form option, you will be led to a page where you are able to customise the form. You are able to choose if you wish to include a title, name fields or, a rewards link (people signing up to EmailOctopus via this link will earn you credit on your EmailOctopus bill). You also have the option to redirect users to a separate URL after signing up instead of displaying a thank you message.
The text on this form is not customisable.
After you have designed the form as per your needs, select the 'Get the code' button. This will generate a pop-up containing the code to this sign-up form. Select the 'Copy to clipboard' option to copy the code, and post it on the HTML of the website where you want the form to appear.