MailFuz Pro Changelog

This document tracks all new features, improvements, and architectural updates introduced in MailFuz Pro.

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Version 1.0.0 Latest

Release Date: November 2026

Cloud API Transports

Direct HTTPS REST API delivery via Amazon SES, SendGrid, Postmark, Mailgun, Brevo, and Resend.

Smart Failover

Zero-downtime backup routing ensuring emails are never dropped during provider timeouts or rate limits.

Visual Studio

Visual email designer with pre-crafted responsive templates and universal template wrapping.

24/7 Automations

Lifecycle drip sequences with 1-click ready presets and subscriber 360° engagement timelines.

1. Cloud REST API Delivery & Smart Failover

• 6 High-Speed Cloud API Transports: Bypasses traditional SMTP socket connections and hosting port blocks with native REST API integrations:
  • Amazon SES: AWS Signature Version 4 (SigV4) REST API adapter with sub-250ms dispatch latency.
  • Twilio SendGrid: Native v3/mail/send JSON transport.
  • Postmark: Sub-second transactional delivery via Postmark Outbound API.
  • Mailgun by Sinch: Dual US (api.mailgun.net) and EU (api.eu.mailgun.net) GDPR-compliant regional endpoints.
  • Brevo (Sendinblue): API v3 integration with plan credit synchronization.
  • Resend: Modern developer-first transactional cloud API.
• Smart Failover Backup Engine: Transparently catches primary provider timeouts, HTTP 429 rate limits, or network failures and reroutes delivery through your designated fallback mailer with zero message loss.
• Real-Time Quota & Rate Limit Monitoring: Dedicated admin dashboard (MailFuz → API Limits & Quotas) featuring:
  • Visual used / total capacity gauges with color-coded alerts (Green < 70%, Amber 70–90%, Red > 90%).
  • Real-time quota synchronization with AWS GetSendQuota, SendGrid credits, and Brevo relay caps.
  • Granular third-party sent email logs with recipient, subject, provider badge, and slide-over RFC 822 header inspector.
  • Customizable monthly plan limits per provider.

2. Visual Email Studio & Responsive Templates

• Visual Template Customizer: Design modern, branded emails directly inside WordPress without touching HTML or CSS.
• Pre-Crafted Core Templates:
  • Customer Welcome & Onboarding (hero banner, feature cards, primary CTA).
  • Order & Account Receipt (dark header, invoice breakdown, transaction summary).
  • Product Update & Digest (gradient banner, article snippets, author signature).
  • Newsletter Blast (clean responsive layout optimized for all email clients).
• Live Multi-Device Simulator: Interactive preview toggle between desktop and mobile viewports with 1-click test delivery.
• Universal Template Wrapping: Automatically wrap outgoing emails from WordPress core, WooCommerce, and Frontend Dashboard in your active branded template.

3. Email Telemetry & Engagement Analytics

• Open Rate Detection: Privacy-respecting tracking pixel measuring unique opens, total opens, and overall open rate (%).
• Signed Click Tracking (CTR): Cryptographically signed HMAC redirect links tracking unique clicks and link-by-link engagement.
• Interactive Activity Chart: Daily timeline visualizer plotting opens and clicks over 7, 14, 30, or 90 days.
• Top-Clicked Links Leaderboard: Live ranking of top-performing links and CTA buttons.
• CSV Telemetry Export: Instant one-click export of filtered engagement events.

4. Broadcast Campaigns & A/B Testing

• Multi-List Broadcast Campaigns: Send newsletters and marketing blasts to single or multiple lists simultaneously.
• Server-Side SQL DISTINCT Deduplication: Guarantees contacts belonging to overlapping lists receive exactly one email.
• Subject Line A/B Split Testing: Deploy 50/50 randomized variant tests (Variant A vs Variant B) to optimize open rates.
• Deduplicated Reach Estimator: Pre-calculates exact recipient counts before scheduling or dispatching.
• RFC 8058 1-Click Unsubscribe: Automatic injection of List-Unsubscribe and List-Unsubscribe-Post headers conforming to Gmail and Yahoo deliverability mandates.

5. 24/7 Drip Automations & Lifecycle Workflows

• Automated Drip Sequences: Trigger sequential, multi-step email workflows based on list subscription or custom WordPress hooks.
• 1-Click Ready Workflow Presets:
  • Welcome Onboarding Series (3 steps: Immediate, Day 1, Day 3).
  • Lead Magnet Nurture Drip (automated content upgrade delivery).
  • 3-Day Re-Engagement Series (re-activate cold contacts).
  • Post-Purchase Follow-Up (order follow-up and reviews).
• Flexible Interval Delays: Configure custom delays in minutes, hours, or days between steps.

6. Audience Management & Subscriber 360° Timeline

• Unlimited Lists & Categories: Organize subscribers into color-coded categories and target lists.
• Subscriber 360° Engagement Timeline: Deep-dive profile for every subscriber displaying delivery history, read states (SEEN 1X, SEEN 2X), link clicks, and enrolled workflows.
• Global Exclusion & Suppression Lists: Automatically quarantine hard bounces and maintain suppressions to protect domain reputation.
• Double Opt-In Verification: Secure one-time token generation for compliant list enrollment.

7. High-Speed Streaming Ingestion & Ecosystem Sync

• Chunked CSV Streaming Ingestion: Ingest subscriber lists of any size in constant ~4MB memory (~2,500 rows/sec) with pause, resume, and cancellation controls.
• 1-Click WordPress User & Role Sync: Import existing WordPress users, WooCommerce customers, or Frontend Dashboard members into designated lists.
• Native Gutenberg Blocks:
  • mailfuz/subscribe-form: Lead-capture form block with live editor controls and honeypot spam protection.
  • mailfuz/subscriber-preferences: Front-end subscriber self-service preference management block.
• WooCommerce & Frontend Dashboard Integration: Branded email overrides for WooCommerce notifications and a native subscription management tab in Frontend Dashboard user portals.