Deliverability – pass DKIM, SPF, DMARC & more
Check and improve your Email Deliverability. Pass DMARC by DKIM-signing your emails without an external SMTP. Comply with Google & Yahoo requirements!
Consider an alternative
Deliverability shows warning signs in 2026 — compare the alternatives below before installing. It runs on 700+ sites, is rated 4.2/5 and was last updated 1 year ago, and scores 39/100 on our health check.
- Small user base (700+ active installs)
- No update in over a year
- Only tested up to WordPress 6.6 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Deliverability stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| deliverability | #10 |
| DKIM | #8 |
| DMARC | #6 |
| >100 | |
| SPF | #9 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 4.2 from 15 reviews
About Deliverability
From the official readme · v1.8.0Description
Our Deliverability Plugin for WordPress allows you to easily authenticate emails generated from your website with a DKIM signature.
But our Deliverability Plugin does much more than that! In fact, it’s packed with incredible email security and email deliverability features such as:
- SPF authentication check, monitor and troubleshoot
- DKIM authentication implementation, check, monitor and troubleshoot
- DMARC authentication check, monitor and troubleshoot
It’s always a good practice to authenticate your domain, but if your domain has a DMARC record and your website runs on WordPress you almost certainly need this plugin.
The Deliverability plugin will take your Email Deliverability to a whole new level.
This plugin is designed and written by experts and is easy to use and understand.
It reduces security risk by checking for shortcomings in your email setup, and by implementing and enforcing the latest recommended Email security practices and techniques.
Fully compatible with Contact-Form 7, WPForms, BuddyPress, WP Mail SMTP and more.
Frequently asked questions
What is this plugin about?
This plugin allows to monitor and improve your Email Authentication. It provides unique features such as DKIM signing and Deliverability scoring that are a game changer for any internet marketer.
My domain has a DMARC. Do I need this?
Absolutely YES. If you have a DMARC you MUST DKIM-sign your WordPress emails using our Plugin or they will fail DMARC.
My domain doesn’t have a DMARC. Do I need this?
Do you want to monitor and improve your Email Deliverability? If the answer is Yes, then you need this plugin even if your domain doesn’t have a DMARC record.
Do I need any technical knowledge to set up and use the plugin?
No technical expertise is required to use our plugin. It’s designed to be user-friendly, with intuitive settings and clear documentation to guide you through the setup process. Only a very basic understanding of DNS is required to publish the provided DKIM key.
How does your plugin help with SPF, DKIM, and DMARC authentication?
Our plugin simplifies the process of implementing and managing SPF, DKIM, and DMARC authentication for your WordPress website. It automatically generates the necessary DNS records and provides easy-to-understand settings for monitoring and troubleshooting authentication issues.
What happens if I already have DKIM, SPF, or DMARC records set up?
You will still need this plugin. Every mail stream must have its own DKIM or it won’t be authenticated. On top of this, our plugin will seamlessly integrate with your existing configuration allowing you to monitor your authentication setup within the plugin interface.
Can I use the plugin with other email marketing or contact form plugins?
Absolutely! Our plugin is fully compatible with popular email marketing and contact form plugins like Contact Form 7, WPForms, BuddyPress, and WP Mail SMTP, ensuring that all outgoing emails from your website are authenticated. Please reach out in case you encounter any compatibility issue and we’ll look into it.
Does the plugin require any ongoing maintenance or updates?
Our plugin is regularly updated to ensure compatibility with the latest WordPress versions and email authentication standards. Once installed and configured, it requires minimal maintenance, giving you peace of mind that your email authentication is always up to date.
Changelog
1.8.0 – 2025-09-15
Added
- WordPress 6.8 compatibility
1.7.1 – 2025-01-25
Fixed
- Congratulations page restored
1.7.0 – 2024-12-20
Added
- WordPress 6.7 compatibility
- PHP 8.4 compatibility
1.6.0 – 2024-08-09
Added
- WordPress 6.6 compatibility
- Descriptions for additional DMARC checks
Fixed
- Unwanted print_r() invocation removed from dashboard page
1.5.0 – 2024-06-07
Added
- Full revamp of the UI
Fixed
- Deprecation warning on recent PHP versions caused by wrong menu entry configuration
- Deprecation warning on recent PHP versions caused by null recipient in the email message created upon registration
- Missing nonce field in the verification email sending form present in the admin notice
1.4.0 – 2024-05-18
Added
- WordPress 6.5 compatibility
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Deliverability alternatives
All deliverability plugins →
FAQ
Deliverability: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 1, 2026
Is Deliverability free?
Yes. Deliverability is free to download and use from the official WordPress.org plugin directory.
Is Deliverability safe to use in 2026?
Deliverability shows warning signs in 2026 — compare the alternatives below before installing. It runs on 700+ sites, is rated 4.2/5 and was last updated 1 year ago, and scores 39/100 on our health check.
How many websites use Deliverability?
Deliverability is active on 700+ WordPress websites and has been downloaded 11,948 times since it launched in August 2022. It was downloaded 187 times in the last 30 days.
Does Deliverability work with WordPress 7.1?
Deliverability is officially tested up to WordPress 6.6.9, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
What PHP version does Deliverability need?
Deliverability requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Deliverability last updated?
The latest version, 1.8.0, was released on September 15, 2025 (1 year ago).
Who makes Deliverability?
Deliverability is developed and maintained by Top Deliverability.
What are the best alternatives to Deliverability?
The most popular alternatives to Deliverability are WP Mail Logging (300K+ installs), Meow Mailer (800+ installs) and Custom SMTP: Email Delivera… (100+ installs).
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