BreznFlow vs MailerPress –

BreznFlow turns n8n workflow JSON exports into interactive, zoomable SVG diagrams inside WordPress. Paste your workflow, and the plugin renders every node with brand-accurate colors, connection lines, and clickable detail panels — directly in your posts and pages. The plugin was built for mifupa.com, a personal blog where n8n automations are documented regularly. Screenshots get outdated. Embedding the n8n editor is impractical. BreznFlow solves this: one shortcode, one interactive diagram, zero external dependencies. Learn more Website: breznflow.com FAQ: breznflow.com/faq Live demo: breznflow.com/demo At a glance Renders n8n workflow JSON as interactive SVG diagrams with zoom, pan, and click 86 node types with brand-accurate colors and icons (OpenAI, Slack, GitHub, Telegram, and more) Click any node to inspect its parameters in a detail panel below the diagram Automatically masks API keys, tokens, and secrets before storage — the raw JSON is never saved 3-step import wizard: paste JSON, configure display, preview and publish 5 built-in themes (Dark, Light, Minimal, Tech, Brezn) plus custom theme import Shortcode [breznflow id="X"] with 13 attributes for per-instance configuration Action bar with share, embed, get JSON, and download actions Standalone embed page for iframe integration Related workflows by shared node types View counter and AI detection badges Zero dependencies — vanilla JavaScript, no external CDN, no tracking What makes BreznFlow different No external services. Everything runs locally inside WordPress. No CDN, no SaaS, no API calls during page loads. Security first. Sensitive data (API keys, tokens, secrets) is automatically detected and replaced with [REDACTED] before storage. The raw workflow JSON is never saved. Real interactivity. Not a static image — visitors can zoom, pan, and click nodes to see their configuration. Vanilla JavaScript. No React, no jQuery, no build step. The renderer is a single JS file that generates SVG elements directly. Built for real sites. Running on the developer’s own production sites since version 1.0. Display modes Visual — full diagram with toolbar, detail panel, and action bar Info — node counts only (InfoBox summary like “3× HTTP Request, 2× Code”) — no diagram Compact — diagram without toolbar or action bar Theme system 5 built-in themes: Dark (default), Light, Minimal, Tech, and Brezn. Custom themes can be imported as .breznflow.json files containing 41 CSS color tokens. Themes are selectable globally, per workflow, or per shortcode. Node type registry 86 predefined node types across 10 categories: Triggers, Core Logic, Data Transformation, Databases, Communication, Google, Dev Tools, AI, Storage, and CRM/Marketing. Unknown node types get a deterministic fallback with auto-generated colors — the same unknown type always looks the same. Sensitive data masking Before saving, BreznFlow runs a two-pass sanitization: All strings pass through WordPress sanitization Secret detection scans for API keys in URL parameters, sensitive header values (Authorization, Bearer, X-API-Key), and high-entropy condition values A masking log records every redaction with reason and context — visible in the wizard preview. Action bar Below the diagram, the action bar provides four configurable actions: Share — article link and anchor link for hash navigation Embed — iframe embed code for standalone embedding Get JSON — formatted JSON display with file size Download — sanitized JSON file download Each action can be enabled/disabled globally, per workflow, or per shortcode. Embed and Download use dual-gate security (global setting AND per-post permission). External Services This plugin optionally connects to external services only when you explicitly use the “Import from URL” feature in the workflow import wizard. Import from URL If you choose to import a workflow by pasting a URL instead of uploading or pasting JSON directly, the plugin makes an HTTP request to that URL using WordPress’s built-in wp_remote_get() function. When: Only when you click the “Fetch” button in the Add Workflow wizard What is sent: Only the URL you provide — no WordPress data, no user data, no cookies To whom: Whatever server hosts the URL you provide Privacy policy: Depends on the server you connect to No data is transmitted automatically. No data is sent during normal page loads or to visitors browsing your site. For security, requests to private and internal network addresses are blocked: localhost, 127.0.0.0/8, 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, and cloud metadata endpoints (e.g. 169.254.169.254).

MailerPress is a free email marketing and newsletter plugin for WordPress. Build professional email campaigns with a drag-and-drop editor, manage unlimited subscribers and lists, schedule newsletters, and send automated emails — all from your WordPress dashboard. Whether you’re a blogger sending a weekly newsletter, an online store owner looking to customize WooCommerce emails (paid plan required), or a marketer running large-scale email campaigns, MailerPress gives you everything you need — with no subscriber limits and no sending restrictions. Drag-and-Drop Email Editor Create beautiful email newsletters without writing a single line of code. The MailerPress email editor is inspired by the WordPress Block Editor (Gutenberg), so it feels instantly familiar: Drag-and-drop blocks to build your email layout Pre-built email templates to get started in seconds Save and reuse your own custom layouts Full theme.json support for consistent branding with Full Site Editing Google Fonts integration with local hosting for fast loading MJML template import for advanced email designs Responsive emails that look great on every device Subscriber Management & List Building Grow your email list with powerful subscriber management tools, completely free: Unlimited subscribers, lists, and tags — no restrictions Customizable opt-in forms with shortcode — works with any page builder (Elementor, Bricks, Divi, and more) Gutenberg opt-in form block for the Block Editor Embeddable opt-in forms for external websites Double opt-in with customizable confirmation emails CSV import and export for easy subscriber migration Advanced subscriber segmentation GDPR-compliant subscription management with built-in unsubscribe Email Campaigns & Newsletter Scheduling Send newsletters and email campaigns on your schedule: Create and send email campaigns to your subscriber lists Schedule newsletters for future delivery Merge tags for personalized email content (subscriber name, custom fields, and more) Content retrieval from posts and pages Flexible click and open tracking (track, anonymize, or disable) Detailed campaign analytics and performance reports Email Automation Automate your email marketing to save time and boost engagement: Automated post notification emails when you publish new content Scheduled email campaigns with precise timing Automated double opt-in confirmation follow-ups (paid plan required) Advanced automation workflows with triggers and conditions (paid plan required) Supported WordPress Plugin Integrations Connect MailerPress with popular form, page builder, e-commerce, membership, and automation plugins: Explore all available integrations: https://mailerpress.com/integrations/ Contact Form 7 (free) — map form fields, lists, tags, custom fields, and double opt-in settings to add subscribers Gravity Forms (paid plan required) — add form submissions to MailerPress lists with field mapping Fluent Forms (paid plan required) — capture form submissions and synchronize subscriber data Elementor (paid plan required) — use the MailerPress widget and Elementor Pro form action Bricks Builder (paid plan required) — build opt-in forms with the native MailerPress element Divi Builder (paid plan required) — connect the Divi Email Optin module to MailerPress WooCommerce (paid plan required) — capture checkout opt-ins, manage subscriber preferences, and customize transactional emails Paid Memberships Pro (paid plan required) — collect newsletter opt-ins at checkout and display subscription preferences in member accounts Advanced Custom Fields / ACF (paid plan required) — use ACF content in Query blocks and campaign content WordPress users (paid plan required) — synchronize WordPress user accounts with MailerPress contacts Third-party automation integrations are also available for Bit Flows, FlowMattic, OttoKit, and SureForms. These integrations are maintained by their respective plugin authors, and feature availability may depend on their plans. WooCommerce Email Marketing (paid plan required) Turn your WooCommerce store into an email marketing machine: Design custom WooCommerce transactional emails with the drag-and-drop editor Override default WooCommerce order confirmation, shipping, and account emails Send promotional email campaigns to your customers Retrieve WooCommerce product content directly in your newsletters Segment subscribers based on purchase behavior Incoming & Outgoing Webhooks (paid plan required) Connect MailerPress to any external system: Incoming webhooks to add subscribers from external platforms Outgoing webhooks to send real-time events to third-party services Build custom integrations with your existing tools Email Sending Options Send emails using your preferred method: PHP Mail (default — works out of the box) Custom SMTP configuration Brevo / Sendinblue integration (paid plan required) SendGrid integration (paid plan required) Gmail / Google Workspace integration (paid plan required) Mailgun integration (paid plan required) Mailjet integration (paid plan required) Postmark integration (paid plan required) Amazon SES integration (paid plan required) Emailit integration (paid plan required) SMTP2GO integration (paid plan required) Resend integration (paid plan required) Bounce management via email provider APIs (paid plan required) All Free Features Drag-and-drop email editor inspired by WordPress Block Editor Unlimited subscribers, lists, tags, and campaigns Email newsletter creation and scheduling Customizable opt-in forms (shortcode + Gutenberg block) Double opt-in with confirmation emails CSV import/export for subscriber migration Subscriber segmentation Contact Form 7 integration Email campaign analytics Post and page content retrieval for newsletters Click and open tracking (with anonymous option) Merge tags for email personalization MJML template import Google Fonts with local hosting GDPR-compliant with built-in unsubscribe Self-hosted — your data stays on your server Full theme.json and FSE support Hundreds of developer hooks and filters REST API for custom integrations Paid Plan Features Upgrade to MailerPress for advanced email marketing capabilities: WooCommerce email customization — design and override transactional emails (order confirmation, shipping, account emails) with the drag-and-drop editor Professional email delivery — Brevo, SendGrid, Gmail / Google Workspace, Mailgun, Mailjet, Postmark, Amazon SES, Emailit, SMTP2GO, Resend AI-powered email content — OpenAI, Claude by Anthropic, DeepSeek, Mistral, and Google Gemini for content optimization and image generation Advanced form integrations — Gravity Forms and Fluent Forms Page builder integrations — Elementor, Bricks Builder, and Divi Builder E-commerce and membership integrations — WooCommerce and Paid Memberships Pro WordPress user synchronization — keep WordPress user accounts connected with MailerPress contacts Advanced Custom Fields integration — use ACF content in Query blocks and campaigns Incoming and outgoing webhooks — connect MailerPress to external apps and automation platforms Advanced automation workflows — triggers, conditions, and behavioral targeting Custom fields and advanced segments — target subscribers based on behavior and data Premium email templates — professional designs ready to use Embed opt-in forms on external websites — grow your list beyond WordPress Bounce management — automatic handling via email provider APIs Automated double opt-in follow-ups — re-engage pending subscribers White-label options — customize MailerPress branding Priority support — dedicated customer assistance Developer-Friendly MailerPress is built for developers who need full control: Hundreds of hooks and filters — customize every aspect of the plugin REST API — build custom integrations and applications MJML support — use MJML templates for advanced email design workflows React-based architecture — modern, extensible, and performant Privacy & GDPR MailerPress is fully GDPR-compliant and privacy-first. No data is collected by us — everything stays on your server. Built-in unsubscribe links, double opt-in, and data export tools help you stay compliant. When using third-party email providers, please review their respective privacy policies. Translations MailerPress is available in English, French, Spanish, Dutch, and Arabic. Help translate MailerPress into your language. From the same team Try SEOPress, the best SEO plugin for WordPress