About this plugin
Letterness is a complete, free newsletter and email marketing plugin for WordPress. Grow your email list with a beautiful newsletter popup and signup forms, then write and send newsletters to your subscribers straight from your dashboard, no third-party account, no monthly fee, and your subscriber list stays in your own database. Letterness is designed, developed, and maintained by Kamran Kazmi , the creator and owner of the plugin. Most newsletter plugins make you choose: a pretty opt-in popup from one plugin, sending from another service, automations behind a paywall. Letterness puts subscriber capture, email sending, automations, and analytics in one lightweight plugin, controlled from a single screen. Home & docs Why choose Letterness? Free and self-hosted. No SaaS account, no per-subscriber pricing, no sending caps beyond your own host. All-in-one. Capture, send, automate, and measure without stitching plugins together. Lightweight and fast. Front-end CSS and JavaScript load only on pages where they are actually needed, so your page speed stays intact. Privacy-friendly. Built-in consent capture, signed one-click unsubscribe, and analytics that store a hashed key instead of raw emails. Works with your setup. Any theme (classic or block), Gutenberg, Elementor, page caches, and any SMTP/ESP plugin. Capture subscribers three ways A responsive newsletter popup with time-delay, scroll-depth, or exit-intent triggers. A sidebar signup card for any widget area or placed with a shortcode. A subscribe button for a theme menu, plus an inline signup form shortcode and a Gutenberg form block . Send newsletters from WordPress Compose in the standard WordPress editor with ten responsive email templates (newsletter, blog digest, announcement, welcome, product, simple, minimal, magazine, holiday, featured). Personalization merge tags such as {first_name|there} , {site_name} , and {unsubscribe_url} , with fallbacks so blank values never look broken. Save drafts, schedule for later, or send now, with throttled batch delivery and live queue status (queued, processing, sent, failed). Sends through WordPress wp_mail() , so any SMTP plugin (WP Mail SMTP, FluentSMTP, Post SMTP, and others) works automatically. Automations Welcome email when someone subscribes, immediately or after a delay you set. New-post notifications that email your subscribers when you publish, instantly or as a scheduled daily or weekly digest. Analytics Open and click tracking per campaign: opens, unique opens, open rate, clicks, unique clicks, click rate, clicked links, and top link. A subscriber-growth chart and source breakdown for your list. Deliverability and compliance List-Unsubscribe and one-click headers (RFC 8058) so Gmail and Yahoo show a native unsubscribe button. Visible unsubscribe link, a branded confirmation page, a re-subscribe option, and instant suppression. GDPR-style consent checkbox with your own text and privacy-policy link. Audience management Lists, tags, and custom fields with bulk actions and filters. Subscriber statuses (active, pending, unsubscribed, bounced) and CSV export. Shortcodes [letterness_form] – inline signup form. [letterness_card] – sidebar signup card. [letterness_subscribe_button] – subscribe button. Letterness is built to be secure, accessible, translation-ready, and RTL-friendly. For the best inbox placement on larger lists, pair it with a free SMTP plugin.