Placing a subscribe form on your Wix page
You can place an embedded form in the desired location on your Wix page using the ‘Embed HTML’ element (in the English version ‘Embed HTML’). You can then paste the code of your form into this element.
Adding the HTML element
Pasting the code of your form
First, paste this HTML snippet into the code field. This will centre your form and give it a maximum width of 600 pixels:
Next, replace the line PASTE THE CODE OF YOUR EMBEDDED FORM HERE with the code of your embedded form from your Laposta account.

If you use a different system for your website, this works slightly differently. In Joomla, for example, you first need to disable the text filter.