mmediasoftwarelab

Deliverability Inspector is a free diagnostic tool that helps you verify your email authentication and deliverability configuration. Ensure your emails reach the inbox by checking all critical DNS records and SMTP settings.
Key Features:
<ul>
<li>SPF Record Check – Verify Sender Policy Framework configuration</li>
<li>DKIM Verification – Check DomainKeys Identified Mail with custom selector support</li>
<li>DMARC Policy Check – Validate Domain-based Message Authentication</li>
<li>MX Records – Confirm mail exchange servers are configured</li>
<li>PTR/Reverse DNS – Check server IP reverse DNS lookup</li>
<li>SMTP Test – Send test emails to verify mail delivery works</li>
</ul>
Perfect For:
<ul>
<li>WordPress site owners sending transactional emails</li>
<li>Email marketers ensuring deliverability</li>
<li>Developers setting up new WordPress installations</li>
<li>Anyone troubleshooting email delivery issues</li>
</ul>
Why Use Deliverability Inspector?
Email deliverability is critical for WordPress sites. Whether you’re sending order confirmations, password resets, or newsletters, proper email authentication prevents your messages from landing in spam folders.
This plugin provides a comprehensive dashboard showing the status of all major email authentication protocols in one place, with actionable recommendations for fixes.
Free & Open Source
Deliverability Inspector is completely free with no premium upsells required for core functionality. Use it to verify your email setup is production-ready.
Works With M Media Dispatch
Once your deliverability checks pass, consider using <a href="https://www.mmediasoftwarelab.com/product/mmedia-dispatch/" rel="nofollow ugc">M Media Dispatch</a> to send professional email campaigns via your own SMTP server – no recurring email marketing costs!
<h3>External services</h3>
This plugin connects to Google’s public DNS over HTTPS (DoH) API as a fallback when the server’s native DNS resolver cannot retrieve records.
Service: Google Public DNS over HTTPS 
Purpose: Resolving TXT, MX, and A DNS records for the domain being checked (SPF, DKIM, DMARC, MX lookups) when PHP’s <code>dns_get_record()</code> returns no results. 
What is sent: The domain name being queried and the DNS record type requested. 
When it is sent: Only when native DNS resolution fails for a given check. No data is sent on most servers where native DNS works correctly. 
Provider: Google LLC 
Terms of service: https://developers.google.com/terms 
Privacy policy: https://policies.google.com/privacy
No personal user data (names, emails, IP addresses of site visitors, etc.) is ever sent to this service – only the domain name being inspected.
<h3>Privacy Policy</h3>
Deliverability Inspector performs DNS lookups and optional SMTP tests using your WordPress server. No data is sent to external services except:
<ul>
<li>DNS queries to public DNS servers (standard internet protocol)</li>
<li>Optional test email via your configured SMTP server</li>
</ul>
No personal data is collected, stored, or transmitted to M Media or any third parties.
<h3>Support</h3>
For support, visit <a href="https://www.mmediasoftwarelab.com/support/" rel="nofollow ugc">M Media Support</a>
<h3>Credits</h3>
Developed by <a href="https://www.mmediasoftwarelab.com/" rel="nofollow ugc">M Media</a>

M Media Email Deliverability Inspector

Comprehensive email deliverability diagnostics tool - checks SPF, DKIM, DMARC, PTR, MX records, and SMTP configuration.

Valentin Bora

Are your contact form emails disappearing? Customers not getting order confirmations? Password reset emails never arriving?
This plugin helps you find out why. It checks whether your domain is set up correctly for email, and then goes a step further: it sends a real test email from your site and tells you exactly what inbox providers like Gmail and Outlook see when your email arrives.
Most email tools, even ones with a “send test email” button, only confirm the message left your site by delivering it to your own inbox. But a letter mailed to your own house always arrives; that tells you nothing about whether a customer’s inbox would accept it. This plugin sends a real test email to an independent grader that reads what actually arrived, and tells you exactly what Gmail and Outlook see: whether you pass SPF, DKIM and DMARC, which service delivered it, and whether your sending address is blacklisted.
<h4>What you’ll learn</h4>
Is your domain set up for email?
<ul>
<li>Can inbox providers verify your emails are real (SPF)</li>
<li>Do your emails carry a digital signature (DKIM)</li>
<li>Are fake emails pretending to be you getting blocked (DMARC)</li>
<li>Can your domain receive email (MX records)</li>
<li>Which email service your domain uses</li>
</ul>
Do your emails actually pass security checks?
Send a real test email from your site and see what happens when it arrives:
<ul>
<li>Does it pass the sender verification check</li>
<li>Is the digital signature valid</li>
<li>Does it pass the anti-spoofing check</li>
<li>Does the sender address match your domain</li>
<li>Which service actually delivered the email (Google, SendGrid, Amazon SES, and others)</li>
</ul>
<h4>More features</h4>
<ul>
<li>Works with any email setup – whether you use an SMTP plugin (WP Mail SMTP, Post SMTP, FluentSMTP, etc.) or your host’s built-in email, this plugin tests whatever your site actually uses to send mail</li>
<li>Site Health integration – email checks appear on your WordPress Site Health screen alongside your other site diagnostics</li>
<li>Weekly monitoring – get an email notification if your domain’s email records change unexpectedly</li>
<li>Email report – send yourself a summary of the results to share with your developer or hosting provider</li>
<li>Score out of 10 – a simple score that tells you how your email setup compares to best practices</li>
</ul>
<h4>How it works</h4>
<ol>
<li>Activate the plugin and go to Tools > Does My Email Work</li>
<li>Click “Check my domain” — the plugin checks your domain’s public email records (the same records Gmail and Outlook already see when you send email)</li>
<li>The check then automatically sends a test email from your site so the service can see what inbox providers would receive</li>
<li>Get a clear report of what’s working and what needs attention</li>
</ol>
<h4>External Services</h4>
This plugin connects to the following external services to perform its diagnostic functions:
doesmyemail.work API 
Used to look up your domain’s public email records and process test email results. For the record lookup, the plugin sends your site’s domain name to this service. Email reports are generated and sent locally by the plugin – no email addresses are transmitted to this service.
When you choose to run a deep check, your site sends a test email to a unique address at doesmyemail.work, and also sends the public DNS records (SPF, DKIM, DMARC, and MX) the plugin already collected for your own domain, so the service can correlate them with the received email. The email’s routing and authentication metadata (From address, Return-Path, sending IP, detected mail service, SPF/DKIM/DMARC results, DKIM key strength, and sending-IP blacklist status) is analyzed and stored for up to 7 days, then automatically deleted. No email body content is stored or read.
<ul>
<li>Service operated by Mach10 (mach10.pro)</li>
<li><a href="https://doesmyemail.work/terms/" rel="nofollow ugc">Terms of Use</a></li>
<li><a href="https://doesmyemail.work/privacy/" rel="nofollow ugc">Privacy Policy</a></li>
</ul>
Cloudflare DNS (used by the doesmyemail.work service) 
The DNS record lookups happen on the doesmyemail.work servers, which use Cloudflare’s public resolver (1.1.1.1) to query your domain’s SPF, DKIM, DMARC, and MX records. Your WordPress site does not contact Cloudflare directly; it only connects to doesmyemail.work. No personal data beyond your domain name is involved.
<ul>
<li><a href="https://www.cloudflare.com/privacypolicy/" rel="nofollow ugc">Cloudflare Privacy Policy</a></li>
<li><a href="https://developers.cloudflare.com/1.1.1.1/privacy/public-dns-resolver/" rel="nofollow ugc">1.1.1.1 resolver commitment</a></li>
</ul>

Does My Email Work – Email Deliverability Test

Email deliverability test for WordPress. See if your emails reach the inbox or land in spam, and exactly what Gmail and Outlook receive.

M Media Email Deliverability Inspector vs Does My Email Work – Email Deliverability Test