Super Duper Plugins

Super Duper SMTP Mail Bridge replaces the unreliable WordPress PHP mail function with a properly authenticated SMTP connection. Emails reach inboxes instead of spam folders or the void.
🇨🇭🇩🇪🇦🇹 Hinweis für DACH-Nutzer: Plugin und Support sind auf Deutsch (Schweiz/Deutschland/Österreich) verfügbar. Alle Texte und Einstellungen sind vollständig auf Deutsch übersetzt.
Unlike other SMTP plugins, this one gives you everything for free – no feature gates, no “upgrade to Pro” nags, no premium tiers. Every feature listed below works right out of the box.
<h4>Why choose this plugin over the big names?</h4>
Most popular SMTP plugins either lock essential features behind a paywall or are bloated with dozens of API integrations you don’t need. Here’s what makes Super Duper SMTP Mail Bridge different:
🛡️ Backup SMTP with Automatic Failover — WP Mail SMTP charges $49+/year for this. FluentSMTP and Post SMTP offer fallback, but our implementation automatically logs each failover event separately so you can see exactly when and why your primary server failed.
⏱️ Built-in Rate Limiting — No other free SMTP plugin offers this. Protect your domain reputation when a contact form gets spammed or a plugin goes rogue. Set limits per minute, hour, or day. Blocked emails are logged with a clear “Blocked” status.
🌐 Domain Control (Whitelist & Blacklist) — Block disposable email domains (tempmail.com, guerrillamail.com) or restrict sending to specific recipient domains only. No other free SMTP plugin has both whitelist AND blacklist for recipient domains.
🔐 AES-256-CBC Password Encryption — Your SMTP password is encrypted before it’s stored in the database. Most free SMTP plugins store credentials in plain text or use simple base64 encoding.
📋 Full Email Log with HTML Preview — View the actual rendered email in an iframe preview or switch to source code view. Filter by status (Success, Failed, Blocked, Failover). WP Mail SMTP charges for email logging. We include it free, with content.
🔧 SMTP Debug Transcript — Enable debug mode and get the complete SMTP server conversation logged for each email. Essential for troubleshooting – most plugins don’t offer this at all, or charge for it.
⚠️ Smart Admin Notifications — Get notified by email when failures exceed your threshold. Includes the last error details, recipient, and subject. Built-in loop prevention ensures the notification itself doesn’t trigger more notifications.
👁️ BCC Monitoring & GDPR/DSGVO Compliance — Automatically BCC all outgoing emails to one or more monitoring addresses. Combined with the email log, this provides legally verifiable proof that an email was actually sent – essential for GDPR (DSGVO) compliance. If a data subject ever disputes whether they received a notification, password reset, or consent confirmation, you have both the log entry and an independent BCC copy as evidence. No other free SMTP plugin offers this level of compliance-ready email auditing.
🚫 Zero Bloat — No setup wizards, no upsell banners, no affiliate links to email services, no tracking. Just a clean settings page, your SMTP config, and a log. Under 50 KB total plugin size.
<h4>Complete Feature List</h4>
<ul>
<li>SMTP configuration (host, port, TLS/SSL, authentication)</li>
<li>Configurable connection timeout (5–120 seconds)</li>
<li>Custom sender name and email address</li>
<li>Allowed sender domain validation</li>
<li>Backup SMTP server with automatic failover</li>
<li>Rate limiting (per minute, hour, or day)</li>
<li>BCC monitoring to one or more addresses</li>
<li>Recipient domain whitelist (only send to these)</li>
<li>Recipient domain blacklist (never send to these)</li>
<li>Admin error notification with configurable threshold</li>
<li>AES-256-CBC password encryption</li>
<li>Complete email log with status, headers, and error messages</li>
<li>HTML email preview (rendered) and source code view</li>
<li>SMTP debug transcript logging</li>
<li>Test email function directly from admin</li>
<li>Automatic log cleanup after configurable number of days</li>
<li>Clean uninstall – removes all data</li>
<li>Translations: German (CH/DE/AT), English, French, Spanish, Italian, Dutch</li>
</ul>
<h4>Feature Comparison</h4>
Here is how Super Duper SMTP Mail Bridge compares to the most popular SMTP plugins, feature by feature.
Legend: ✅ = included for free · 🔒 = paid / Pro only · ❌ = not available
Super Duper SMTP Mail Bridge (this plugin)
<ul>
<li>SMTP configuration: ✅</li>
<li>Email logging: ✅</li>
<li>Email content stored in log: ✅</li>
<li>Backup SMTP with automatic failover: ✅</li>
<li>Rate limiting (per minute / hour / day): ✅</li>
<li>Recipient domain whitelist: ✅</li>
<li>Recipient domain blacklist: ✅</li>
<li>BCC monitoring (GDPR/DSGVO proof): ✅</li>
<li>Strong password encryption (AES-256-CBC): ✅</li>
<li>SMTP debug transcript: ✅</li>
<li>Admin error alerts (failure threshold): ✅</li>
<li>Allowed sender domain validation: ✅</li>
<li>No ads / upsell in the admin: ✅</li>
</ul>
WP Mail SMTP
<ul>
<li>SMTP configuration: ✅</li>
<li>Email logging: 🔒</li>
<li>Email content stored in log: 🔒</li>
<li>Backup SMTP with automatic failover: 🔒</li>
<li>Rate limiting (per minute / hour / day): ❌</li>
<li>Recipient domain whitelist: ❌</li>
<li>Recipient domain blacklist: ❌</li>
<li>BCC monitoring (GDPR/DSGVO proof): ❌</li>
<li>Strong password encryption (AES-256-CBC): ❌</li>
<li>SMTP debug transcript: ❌</li>
<li>Admin error alerts (failure threshold): 🔒</li>
<li>Allowed sender domain validation: ❌</li>
<li>No ads / upsell in the admin: ❌</li>
</ul>
FluentSMTP
<ul>
<li>SMTP configuration: ✅</li>
<li>Email logging: ✅</li>
<li>Email content stored in log: ✅</li>
<li>Backup SMTP with automatic failover: ✅</li>
<li>Rate limiting (per minute / hour / day): ❌</li>
<li>Recipient domain whitelist: ❌</li>
<li>Recipient domain blacklist: ❌</li>
<li>BCC monitoring (GDPR/DSGVO proof): ❌</li>
<li>Strong password encryption (AES-256-CBC): ❌</li>
<li>SMTP debug transcript: ❌</li>
<li>Admin error alerts (failure threshold): ✅</li>
<li>Allowed sender domain validation: ❌</li>
<li>No ads / upsell in the admin: ✅</li>
</ul>
Post SMTP
<ul>
<li>SMTP configuration: ✅</li>
<li>Email logging: ✅</li>
<li>Email content stored in log: ✅</li>
<li>Backup SMTP with automatic failover: ✅</li>
<li>Rate limiting (per minute / hour / day): ❌</li>
<li>Recipient domain whitelist: ❌</li>
<li>Recipient domain blacklist: ❌</li>
<li>BCC monitoring (GDPR/DSGVO proof): ❌</li>
<li>Strong password encryption (AES-256-CBC): ❌</li>
<li>SMTP debug transcript: ✅</li>
<li>Admin error alerts (failure threshold): ✅</li>
<li>Allowed sender domain validation: ❌</li>
<li>No ads / upsell in the admin: ❌</li>
</ul>
YaySMTP
<ul>
<li>SMTP configuration: ✅</li>
<li>Email logging: ✅</li>
<li>Email content stored in log: ✅</li>
<li>Backup SMTP with automatic failover: ✅</li>
<li>Rate limiting (per minute / hour / day): ❌</li>
<li>Recipient domain whitelist: ❌</li>
<li>Recipient domain blacklist: ❌</li>
<li>BCC monitoring (GDPR/DSGVO proof): ❌</li>
<li>Strong password encryption (AES-256-CBC): ❌</li>
<li>SMTP debug transcript: ❌</li>
<li>Admin error alerts (failure threshold): ✅</li>
<li>Allowed sender domain validation: ❌</li>
<li>No ads / upsell in the admin: ❌</li>
</ul>
Every feature in Super Duper SMTP Mail Bridge is included for free — no premium tier, no feature gates.

Super Duper SMTP Mail Bridge

Reliable SMTP email delivery with backup failover, rate limiting, domain control, BCC monitoring, and full email log. 100% free.

Mustaneer Abdullah

Hassan Ali ⚡️

Coresol Studio

Daniyal Hassan

SendLog is a comprehensive email activity logging plugin for WordPress that captures every outgoing email sent by your site. Whether you need to debug delivery issues, audit communication, or monitor email health — this plugin does it all, completely free.
<h4>Core Features</h4>
<ul>
<li>Complete Email Logging — Captures To, Subject, Message, Headers (From, CC, BCC, Reply-To), Attachments, IP address, timestamp, delivery status, error messages, and source plugin/theme.</li>
<li>Trash & Restore — Move logs to trash before permanently deleting, just like WordPress posts. Includes empty trash and restore functionality.</li>
<li>Resend Emails — Resend any logged email with one click, or edit before resending.</li>
<li>Forward Emails — Automatically forward copies of all outgoing emails to specified addresses with exclusion patterns.</li>
<li>Export Logs — Export selected or all logs as CSV with customizable column selection.</li>
<li>Auto-Delete — Automatically clean up old logs via daily WP-Cron with configurable retention.</li>
<li>Email Monitor — Daily heartbeat test email with admin notice if delivery fails.</li>
<li>Webhook Notifications — Get notified when emails are sent or fail via Slack, Discord, Microsoft Teams, or any generic webhook URL. Configurable triggers (All Emails / Failed Only) and optional forwarded email inclusion.</li>
<li>REST API — Full REST API with endpoints for logs, stats, and resend functionality.</li>
<li>Dashboard Widget — At-a-glance email stats on the WordPress dashboard.</li>
<li>Multisite Support — Per-site log tables with network activation support.</li>
<li>HTML Test Email — Send a beautifully formatted HTML test email to verify delivery and test the log viewer.</li>
</ul>
<h4>Admin Interface</h4>
<ul>
<li>Modern List Table — Sortable, filterable email logs with all columns (Sent at, Status, To, Subject, From, CC, BCC, Reply To, Attachment, IP Address, Source) — all toggleable via Screen Options.</li>
<li>Screen Options — Toggleable columns and configurable entries per page.</li>
<li>Email Detail Modal — View full email content with HTML/Text tab toggle, delivery details, and headers.</li>
<li>Tools Dashboard — Statistics overview with cards showing Total, Sent, Failed, Forwarded, Today, and Active Webhooks counts.</li>
<li>Tabbed Settings — Clean, organized settings with info tooltips explaining each option.</li>
<li>Date Picker — jQuery UI datepicker with clean custom styling for date-based search and filtering.</li>
</ul>
<h4>Use Cases</h4>
<ul>
<li>Debug email delivery issues</li>
<li>Audit emails sent by plugins (WooCommerce, Contact Form 7, Gravity Forms, etc.)</li>
<li>Monitor transactional email health</li>
<li>Keep records for compliance</li>
<li>Resend failed or lost emails</li>
<li>Get instant alerts via Slack/Discord/Teams when emails fail</li>
<li>Forward all site emails to an archive mailbox</li>
</ul>
<h3>External Services</h3>
This plugin can optionally connect to external webhook services to send notifications when emails are sent or fail. This feature is disabled by default and must be explicitly configured by the site administrator.
<h4>Webhook Notifications (optional, user-configured)</h4>
When you enable webhook notifications in Settings > Webhooks, the plugin sends HTTP POST requests to the webhook URL(s) you provide. The data sent includes: email subject, recipient, status (sent/failed), error message (if failed), and timestamp.
Supported services:
<ul>
<li>Slack — <a href="https://slack.com/terms-of-service" rel="nofollow ugc">Terms of Service</a> | <a href="https://slack.com/privacy-policy" rel="nofollow ugc">Privacy Policy</a></li>
<li>Discord — <a href="https://discord.com/terms" rel="nofollow ugc">Terms of Service</a> | <a href="https://discord.com/privacy" rel="nofollow ugc">Privacy Policy</a></li>
<li>Microsoft Teams — <a href="https://www.microsoft.com/servicesagreement" rel="nofollow ugc">Terms of Service</a> | <a href="https://privacy.microsoft.com/privacystatement" rel="nofollow ugc">Privacy Policy</a></li>
<li>Generic Webhook — Any custom URL you configure. You are responsible for ensuring compliance with the receiving service’s terms.</li>
</ul>
No data is sent to any external service unless you explicitly configure a webhook URL and enable it. No analytics, telemetry, tracking, or other external calls are made by this plugin.

SendLog – Email Activity Log

Log, view, resend, forward, and export all outgoing WordPress emails. Includes webhook notifications, REST API, trash & restore, auto-delete, and  …

Super Duper SMTP Mail Bridge vs SendLog – Email Activity Log