Follow these steps to use the newsletter plugin on Joomla:
1. Download and install a newsletter extension/plugin on your Joomla website. Recommended options include AcyMailing, RSMail, and Mailchimp.
1. Once the plugin is installed, go to the ‘Components’ tab on your Joomla admin panel and click on the newsletter extension.
1. Follow the instructions to create a new newsletter. You can create a new campaign or select an existing one.
1. Customize the newsletter by adding content such as text, images, and links. You can also choose the template design, font, and colors.
1. Choose the target audience for the newsletter. You can send the newsletter to all subscribers, a specific group or segment, or individuals on your list.
1. Preview the newsletter to ensure that it appears correctly and all links are working.
1. Schedule or send the newsletter immediately.
1. Monitor the performance report to see how many subscribers opened, clicked, or unsubscribed from the newsletter.
With this, you can easily send newsletters to your subscribers and keep them updated with your latest news and promotions.