InbxGuard – Email Deliverability, SPF, DKIM, DMARC Checker & Email Logs

Description

Stop losing customer orders, inquiries, and trust because your WordPress emails — WooCommerce order notifications, password resets, contact form submissions, or shipping alerts — silently land in spam or never send.

InbxGuard is the ultimate email deliverability scanner, DNS inspector, and email logger for WordPress. It automatically audits your domain against strict Google, Yahoo, and Microsoft Outlook sender requirements, grades your overall email setup with a visual Deliverability Health Score (0–100), and provides step-by-step guidance to ensure 100% inbox placement.

Works seamlessly on any WordPress website, with native WooCommerce order email intelligence and 1-click DNS record generators.

Why Are Your WordPress Emails Landing in Spam?

1. Missing or Broken SPF Records: Mailbox providers reject emails if your server isn’t authorized in your SPF record (v=spf1).
2. Missing DMARC Policies: Google and Yahoo reject emails from domains without an active DMARC policy (_dmarc).
3. Unsigned DKIM: Without DKIM cryptographic signatures, mailbox providers treat your emails as potential spoofing or phishing attacks.
4. Server IP on Spam Blacklists: Shared web hosts frequently have dirty IP reputations listed on DNSBL blacklists.
5. No SMTP Mailer Configured: Using standard PHP mail() triggers aggressive spam filters and high bounce rates.
6. No Reverse DNS (PTR) or Domain Alignment: Mismatches between your “From” email domain and your server hostname cause immediate deliverability penalties.

InbxGuard inspects all of these critical deliverability factors in seconds and tells you exactly how to fix them.

Key Features

• Deliverability Health Score (0–100): Visual animated rating of your domain’s email health across Authentication, Alignment, Infrastructure, and Reputation.
• SPF Record Audit & Syntax Checker: Validates your v=spf1 record, checks mechanisms, and flags insecure +all or ?all rules.
• DMARC Policy Inspector: Verifies your _dmarc record, inspects policy strictness (p=none, quarantine, reject), and checks rua reporting.
• DKIM Selector Scanner: Probes common DKIM selectors (default, google, k1, mail, etc.) to confirm signing status.
• DMARC & SPF Record Generators: Built-in copy-and-paste DNS generators tailored for Google Workspace, Microsoft 365, SendGrid, Mailgun, Brevo, and custom mailers.
• IP Blacklist Monitor: Scans your sending IP across major DNS-based blacklists (Spamhaus, SpamCop, Barracuda, SORBS, PSBL).
• Reverse DNS (PTR) Verification: Ensures your server IP has a valid PTR record matching your hostname.
• Outbound SMTP Firewall & Port Scanner: Detects whether your hosting firewall blocks essential mail ports (25, 465, 587).
• Site-Wide Email Logs & Analytics: Tracks outgoing emails, delivery status, recipients, timestamps, and delivery success rates.
• Live Email Deliverability Tester: Send immediate test emails to any inbox to verify headers and diagnose transmission issues.
• WooCommerce Transactional Email Risk Matrix: (When WooCommerce is active) Evaluates all WooCommerce transactional email templates (New Order, Customer Invoice, Processing Order) and ranks deliverability risks.
• Postmaster Tools Shortcuts: Instant links to Google Postmaster Tools, Microsoft SNDS, Yahoo Postmaster, and MXToolbox.
• Export Email Logs: Download filtered email logs in CSV format for compliance, debugging, and audits.
• Lightweight & Fast: Zero frontend scripts or performance overhead. DNS lookups are cached using WordPress transients.

Works Alongside Your Favorite SMTP Plugins

InbxGuard does not replace your SMTP plugin — it supercharges it! While SMTP plugins handle the transport of emails, InbxGuard audits the domain authentication and DNS reputation that determines whether they land in the Inbox or the Spam folder.

InbxGuard works seamlessly with:
* WP Mail SMTP
* FluentSMTP
* Post SMTP
* Brevo (Sendinblue)
* SendGrid
* Mailgun
* Amazon SES
* Google Workspace (Gmail)
* Microsoft 365 / Outlook

External Services & Privacy

This plugin uses external services and collects data to function effectively. In compliance with WordPress.org guidelines, please review the following disclosures:

• DNSBL Providers: To check your server’s IP reputation, the plugin queries public DNS-based blacklists (including Spamhaus, SpamCop, Barracuda, SORBS, and PSBL). This involves sending your server’s public IP address to these external DNS servers during the audit.
• Freemius SDK: This plugin uses the Freemius SDK for license management, usage tracking (if opted-in), and secure checkout for the Pro version. Freemius may collect non-sensitive diagnostic data and plugin usage metrics. You can view their privacy policy at https://freemius.com/privacy/.
• Email Logging Privacy: The Pro version stores the headers and body of sent transactional emails locally in your WordPress database to help you troubleshoot deliverability. Because these logs may contain personal data (like names, email addresses, and order details), we strongly recommend configuring a short log retention period (e.g., 14 or 30 days) in the plugin settings and consulting your privacy policy to ensure GDPR/CCPA compliance.