Deliverability — WordPress Email Plugin
Deliverability – pass DKIM, SPF, DMARC & more
by Top Deliverability · WordPress.org page · Website
Deliverability has 700+ active installs on WordPress.org and 11,796 downloads all time. We have tracked it since September 4, 2026; download trends appear after 30 days of data. The last update was on September 15, 2025, tested up to WordPress 6.6.7.
Deliverability at a glance
Is Deliverability well maintained?
Features
The feature list from the plugin's own readme on WordPress.org, trimmed to the essentials.
- SPF authentication check, monitor and troubleshoot
- DKIM authentication implementation, check, monitor and troubleshoot
- DMARC authentication check, monitor and troubleshoot
Deliverability reviews and ratings
15 reviews on WordPress.org, with the most recent ones as their authors posted them.
15 reviews
- 5★
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12
- 4★
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0
- 3★
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0
- 2★
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0
- 1★
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3
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Cant make account
Unfortunate I do not recieve any email for verifications my account. Tried on different installations and different emails.
Jeroen Visbeek -
Excellent plugin ...
I'm seriously impressed with this plugin. Easy to configure, works a treat and succeeds in what it sets out to do, i.e. DKIM signing email. Thank you so much. It's so good and as a free plugin I'm almost embarrassed to ask, but I will. It creates auth0_session_0 cookies and I'm happy to accept that. The only trouble is I try to keep my website as secure as possible and when I check my security headers I see auth0_session_0 cookies don't use the secure flag. Would it be possible to have the option for these cookies to use the secure flag?
nigelpentland -
Very helpfull
A plugin like this was much needed in the WordPress repository. It’s a great tool to improve your email deliverability. Overall, a very helpful plugin.
ignacioroig -
No support, no DKIM
I added DKIM, but it does not recognize it, I tried few times, and waited weeks, nothing, I contacted developer via email, no reply, will change review if developer will reply, my email [email protected]
redas1 -
Great plugin
I really like this plugin. It does exactly what I needed and you get a deliverability score depending on the settings that are established in the backend. The only downside, is that it took me some external research to get the correct setup for DMARC (the ones provided, where not precise enough). Once I got it correctly, my website rated 100% on the deliverability score. Thanks.
edigi -
A standout plugin
The plugin offers a straightforward and user-friendly experience. Following the simple instructions in the settings page, I successfully added the TXT record to my DNS and my emails were successfully signed. I particularly appreciate the delivery chart and the dashboard, which provide valuable insights on my email deliveries and how to enhance it. These features empower me to ensure a safer and more reliable communication to my customers.
Antonino Piazza
Details
Check and improve your Email Deliverability. Pass DMARC by DKIM-signing your emails without an external SMTP. Comply with Google & Yahoo requirements!
The full description, screenshots and every review live on the WordPress.org page.
Rankings Deliverability competes in
Tags
- deliverability
- DKIM
- DMARC
- SPF
- Version
- 1.8.0
- Last updated
- Sep 15, 2025
- First published
- Aug 22, 2022
- Requires WordPress
- 5.9
- Tested up to
- 6.6.7
- Requires PHP
- 7.4
- Pricing
- Free on WordPress.org
Deliverability FAQ
What does Deliverability do?
According to its WordPress.org readme, Deliverability offers SPF authentication check, monitor and troubleshoot, DKIM authentication implementation, check, monitor and troubleshoot and DMARC authentication check, monitor and troubleshoot.
How many active installs does Deliverability have?
WordPress.org reports 700+ active installs for Deliverability as of September 7, 2026.
Is Deliverability still maintained?
Yes. The last release was on September 15, 2025 and it is tested up to WordPress 6.6.7.
Is Deliverability free?
Deliverability is free to install from WordPress.org. Many plugins also sell a paid version or add-ons.