Hello @michael-travan .
Thank You for response.
What I needed support for was a bit more complex, as I was integrating my own script for the Newsletter subscription form. The plugin you suggested wasn’t entirely suitable for my case because my website also functions as a store based on Woocommerce. Creating an account in Woocommerce automatically added me to the subscriber list, which shouldn’t have happened. My intention was for the form to generate a WordPress account assigned the Subscriber role (through custom code), consequently enrolling it in the list of subscribers managed by your plugin. When someone created an account in Woocommerce, your WP Users Integration plugin caused them to also be added to the list. It doesn’t offer the ability to exclude accounts with a specified role. Moreover, my script supports sending links to confirm subscription and unsubscription, so signing up and unsubscribing required a different solution than what the aforementioned plugin provides. Consequently, I familiarized myself with API v1 of your plugin and successfully managed everything by adjusting my code accordingly. Thanks to this, my script no longer needs to create any user accounts; it simply adds a subscriber to the list from your plugin.
I have already achieved what I needed most. Thanks for your interest.