Title: Letterness Author: kamrankazmi Published: August 9, 2026 Last modified: August 9, 2026 --- Search plugins ![](https://ps.w.org/letterness/assets/banner-772x250.png?rev=3639799) ![](https://ps.w.org/letterness/assets/icon-256x256.png?rev=3639799) # Letterness By [kamrankazmi](https://profiles.wordpress.org/kamrankazmi/) [Download](https://downloads.wordpress.org/plugin/letterness.4.0.1.zip) * [Details](https://twd.wordpress.org/plugins/letterness/#description) * [Reviews](https://twd.wordpress.org/plugins/letterness/#reviews) * [Installation](https://twd.wordpress.org/plugins/letterness/#installation) * [Development](https://twd.wordpress.org/plugins/letterness/#developers) [Support](https://wordpress.org/support/plugin/letterness/) ## Description Letterness is a complete, self-hosted newsletter toolkit for WordPress. Collect subscribers with a customizable popup, a sidebar signup card, and a header menu button, then compose and send newsletters to your list directly from your dashboard. No third-party account required. Everything is controlled from a single settings screen, and the popup can be styled independently for desktop and mobile. **Capture subscribers three ways** * A responsive popup with delay, scroll-depth, or exit-intent triggers. * A sidebar signup card you can drop into any widget area or place with a shortcode. * A subscribe button that injects into a theme menu location or appears via shortcode. **Design control** * Separate desktop and mobile colors, image, shape, dimensions, and animations. * Six popup layouts (split, stacked, minimal, circle, hexagon, octagon). * Ten entrance animations plus badge and screen-transition effects. * Live in-dashboard preview at desktop and mobile viewport sizes. **Built-in sending** * Compose newsletters with the standard WordPress editor. * Save drafts, schedule for later, or send immediately. * Batched delivery through your site’s normal `wp_mail()` pipeline. * Automatic, one-click unsubscribe link on every email. * Customizable from-name, from-address, and email design. **Subscriber management** * View your subscriber list in the dashboard. * Export all subscribers to CSV. * Remove subscribers individually. **Shortcodes** * `[letterness_subscribe_button]` places the subscribe button anywhere. * `[letterness_card]` places the signup card anywhere. For large lists or better inbox placement, pairing Letterness with an SMTP plugin( such as WP Mail SMTP) is recommended. ## Screenshots [⌊The newsletter popup on the front end, with the signup form and bonus content.⌉⌊ The newsletter popup on the front end, with the signup form and bonus content.⌉[ The newsletter popup on the front end, with the signup form and bonus content. ## Installation 1. Upload the `letterness` folder to the `/wp-content/plugins/` directory, or install the plugin through the **Plugins > Add New** screen in WordPress. 2. Activate the plugin through the **Plugins** screen. 3. Open **Letterness** in the admin menu to configure triggers, design, content, and sending. 4. (Optional) Add the signup card under **Appearance > Widgets**, or place `[letterness_subscribe_button]`/`[ letterness_card]` anywhere on your site. ## FAQ ### Do I need a third-party email service? No. Letterness stores subscribers in your own database and sends through WordPress` wp_mail()`. For higher deliverability on larger lists, an SMTP plugin is recommended. ### How do visitors unsubscribe? Every email includes a signed, one-click unsubscribe link. The link is verified with a secure token and requires no login. ### Can I show a different design on mobile? Yes. Colors, image, shape, dimensions, and animations each have an optional mobile override, so desktop and mobile can look completely different. ### Where is the popup shown? By default the popup can auto-open using a time delay, scroll depth, or exit intent. You can also disable auto-open and only show it when a visitor clicks the subscribe button. ### Does it work with block themes? Yes. Use the shortcodes to place the button or card in block themes, or drag the widget into a widget area on classic-widget themes. ### What happens to my data when I uninstall? Deleting the plugin removes its options, both custom database tables (subscribers and newsletters), and any scheduled newsletter events. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “Letterness” is open source software. The following people have contributed to this plugin. Contributors * [ kamrankazmi ](https://profiles.wordpress.org/kamrankazmi/) [Translate “Letterness” into your language.](https://translate.wordpress.org/projects/wp-plugins/letterness) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/letterness/), check out the [SVN repository](https://plugins.svn.wordpress.org/letterness/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/letterness/) by [RSS](https://plugins.trac.wordpress.org/log/letterness/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 4.0.1 * Enqueued the preview highlight styles and script instead of printing them inline. * Housekeeping and code-quality improvements. #### 4.0.0 * Public release on WordPress.org. * Independent desktop and mobile design for the popup. * Built-in newsletter composer with drafts, scheduling, and batched sending. * Sidebar signup card, header subscribe button, and shortcodes. * Secure token-based one-click unsubscribe. * Subscriber CSV export. ## Meta * Version **4.0.1** * Last updated **2 days ago** * Active installations **Fewer than 10** * WordPress version ** 6.2 or higher ** * Tested up to **7.0.3** * PHP version ** 7.4 or higher ** * Language * [English (US)](https://wordpress.org/plugins/letterness/) * Tags * [email](https://twd.wordpress.org/plugins/tags/email/)[newsletter](https://twd.wordpress.org/plugins/tags/newsletter/) [Opt-in](https://twd.wordpress.org/plugins/tags/opt-in/)[popup](https://twd.wordpress.org/plugins/tags/popup/) [subscribe](https://twd.wordpress.org/plugins/tags/subscribe/) * [Advanced View](https://twd.wordpress.org/plugins/letterness/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/letterness/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/letterness/reviews/) ## Contributors * [ kamrankazmi ](https://profiles.wordpress.org/kamrankazmi/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/letterness/)