Here are a few popular plugins that are commonly used for digital marketing on WordPress:

Yoast SEO: This plugin helps you optimize your website for search engines by analyzing your content and providing suggestions for improvement. It also includes features for creating XML sitemaps, and controlling which pages are indexed by search engines.

Google Analytics for WordPress: This plugin allows you to easily integrate Google Analytics with your WordPress website, so you can track and analyze your website traffic.

Sumo: This plugin offers a suite of tools for growing your email list, including a welcome mat, scroll box, and smart bar.

WPForms: This plugin allows you to create and add forms to your website, making it easy to collect leads and contact information.

Social Media Auto Publish: This plugin allows you to automatically share your new blog posts on your social media accounts, saving you time and ensuring that your content is reaching a wider audience.

MailChimp for WordPress: This plugin allows you to easily integrate MailChimp with your WordPress website, so you can easily create and send email campaigns to your subscribers.

WP Super Cache: This plugin speeds up your website by caching your pages and posts, reducing the load on your server and making your website load faster for visitors.

Akismet Anti-Spam: This plugin protects your website from spam comments, by automatically filtering out spam comments and saving you time from moderating them.

W3 Total Cache: This plugin improves the SEO and user experience of your site by increasing website performance, reducing download times via features like content delivery network (CDN) integration.

All in One SEO Pack: This plugin provides a comprehensive solution for optimizing your website for search engines, and includes features such as XML sitemaps, and the ability to optimize your website’s meta tags.