Deliverability – pass DKIM, SPF, DMARC & more

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

Share of active installs on each version of this plugin · 83% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

Refined from the date this plugin crossed into its current band.

No paid tier is visible, so we don't put a figure on revenue or sale value: that would be guessing. The install base is a real asset to an acquirer, just not one public data lets us price. A small install base leaves thin data to model from.

Reviewers who got it working call it easy to set up and effective at DKIM signing, but the two newest complaints report DKIM not being recognised and verification emails never arriving, with no reply from the developer.

1. ★★★★★ Jeroen Visbeek

   1.3y ago

   Unfortunate I do not recieve any email for verifications my account. Tried on different installations and different emails.

   Read on wp.org ↗
2. ★★★★★ nigelpentland

   1.8y ago

   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?

   Read on wp.org ↗
3. ★★★★★ ignacioroig

   1.9y ago

   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.

   Read on wp.org ↗
4. ★★★★★ redas1

   2.0y ago

   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]

   Read on wp.org ↗
5. ★★★★★ edigi

   2.4y ago

   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.

   Read on wp.org ↗
6. ★★★★★ Antonino Piazza

   2.7y ago

   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.

   Read on wp.org ↗
7. ★★★★★ Vincenzo Casu

   2.8y ago

   The plugin is very well made and the code is organized and clean which is truly a plus, an added value in the sea of plugins that often bring down the performance of websites due to the poor quality of the written code. It helps a lot in his mission. Especially the less experienced, but also professionals will have to do less expensive work to optimize mail delivery. I highly recommend trying it to all users who have problems with mail delivery from their WordPress site and who have to struggle with this annoying problem every day. A Swiss Army Knife for optimizing email deliverability, with practical tips that guide you step-by-step through the entire process of tracking effective email delivery.

   Read on wp.org ↗
8. ★★★★★ hedoluna

   2.8y ago

   This plugin covers a wide range of features in a particular niche of email deliverability. It is strongly advised to use it for everyone involved in marketing, e-commerce, and the overall effort to gain traction with the users.

   Read on wp.org ↗

Automated install-time checks, tested on PHP 8.1.12 · WP 6.8.2

Translated into 15 languages, 1 at 90% or more

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

1. 2026-08-03 800+ → 700+ down after 3 days in tier
2. 2026-07-31 700+ → 800+ up after 4 days in tier
3. 2026-07-27 800+ → 700+ down after 253 days in tier
4. 2025-11-16 900+ → 800+ down after 47 days in tier
5. 2025-09-30 800+ → 900+ up after 1 days in tier
6. 2025-09-29 900+ → 800+ down after 20 days in tier
7. 2025-09-09 800+ → 900+ up after 3 days in tier
8. 2025-09-06 900+ → 800+ down after 1 days in tier

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

• WP Mail Logging 300K+ installs · 4.7★ · 2 shared tags A
• WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin 4M+ installs · 4.8★ · 1 shared tag A
• MC4WP: Mailchimp for WordPress 1M+ installs · 4.8★ · 1 shared tag A
• Easy WP SMTP – WordPress SMTP and Email Logs: Gmail SMTP, Office 365, Outlook, Custom SMTP, and more 500K+ installs · 4.6★ · 1 shared tag A
• Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App 300K+ installs · 4.7★ · 1 shared tag A
• Mailchimp for WooCommerce 200K+ installs · 4.0★ · 1 shared tag B

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Deliverability – pass DKIM, SPF, DMARC & more: 700+ active installs, 4.2★ (15 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/deliverability