內容簡介
Letterness 是一款完整且免費的 WordPress 郵件行銷外掛，能幫助用戶透過美觀的彈出式新聞信和報名表單來增長電子郵件名單，並直接從控制台撰寫和發送新聞信，無需第三方帳號或月費。
【主要功能】
• 美觀的彈出式新聞信和報名表單
• 直接從 WordPress 發送新聞信
• 自動化歡迎郵件和新文章通知
• 詳細的開信和點擊追蹤分析
• 隱私友好的同意捕捉功能
• 支援多種佈景主題和 SMTP 外掛
外掛標籤
開發者團隊
② 後台搜尋「Letterness – Newsletter Popup, Signup Forms & Built-in Email Sending」→ 直接安裝（推薦）
原文外掛簡介
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.
