If you want to build a personalised sign-up form for your website, Ninja Forms is a great plugin for WordPress that makes the process easy. By integrating it with EmailOctopus, you can effortlessly manage email lists and automate communication. Start by installing and activating the add-on from your dashboard. Then, navigate to the settings, locate EmailOctopus, and enter your API key, which you can access from your account when you are signed in.

Next, go to Emails & Actions, click the plus button at the bottom right, and add the EmailOctopus Action. Once done, select a list and apply Merge Tags to ensure that the fields in Ninja Forms properly match those in EmailOctopus. This setup ensures smooth data transfer, allowing you to manage your email subscribers without manual effort.