by WDM
5 (7 reviews)
Mail Queue
Gain full control over your WordPress emails. Queue outgoing emails and get alerts when your site tries to send unusually high volumes.
Compatible with WP 7
v1.6.1
Current Version v1.6.1
Updated 4 days ago
Last Update on 20 Jul, 2026
Refreshed 7 hours ago
Last Refreshed on
Rank
#6,990
—
No change
Active Installs
1K+
+11.1%
KW Avg Position
27.2
+0.4 better
Downloads
8.2K
+2 today
Support Resolved
100%
—
No change
Rating
100%
Review 5 out of 5
5
(7 reviews)
Next Milestone 2K
1K+
2K+
1,810
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro
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Rank Changes
Current
#6,990
Change
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5.0
7 reviews
Overall
100%
5
7
(100%)
4
0
(0%)
3
0
(0%)
2
0
(0%)
1
0
(0%)
Tracked Keywords
Showing 5 of 5| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| queue | 1 | — | Tag | 12 hours ago |
| wp_mail | 2 | — | Tag | 12 hours ago |
| 12 | — | Tag | 12 hours ago | |
| email log | 16 | — | Tag | 12 hours ago |
| 105 | — | Tag | 12 hours ago |
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Support Threads Overview
Resolved
Unresolved
3
Total Threads
3
Resolved
0
Unresolved
100%
Resolution Rate
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Start Tracking FreePlugin Details
- Version
- 1.6.1
- Last Updated
- Jul 20, 2026
- Requires WP
- 5.9+
- Tested Up To
- 7
- PHP Version
- 7.4 or higher
- Author
- WDM
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 5
- Reviews
- 7
- Support Threads
- 3
- Resolved
- 100%
Keywords
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Frequently Asked Questions
Common questions about Mail Queue
Yes. Once activated, please go into the plugin settings and configure the queue for your website. You can choose whether the Mail Queue should be Enabled, Paused, or Disabled, and you can control how many emails are sent and how often they should be sent. You can also enable alerts, define the queue size threshold for alerts, and optionally enable automatic pausing when an alert is triggered.
When the Mail Queue is enabled, the plugin intercepts wp_mail(). Instead of sending emails immediately, they are stored in the database and released gradually via WP-Cron according to your configured interval. The plugin offers three states: Enabled: emails are added to the queue and sent gradually by WP-Cron. Paused: emails are still added to the queue, but no queued emails are sent until you enable the queue again. Disabled: the plugin does not intercept wp_mail() and has no effect on outgoing emails.
No. This plugin does not change HOW the emails are sent. For example: If you use SMTP for sending, or a third-party-service like Mailgun, everything will still work. This plugin changes WHEN the emails are sent. By the email Queue it gives you control about how many emails should be sent in which interval.
If you're using a caching plugin like W3 Total Cache, WP Rocket or any other caching solution which generates static HTML files and serves them to visitors, you'll have to make sure you're calling the wp-cron file manually every couple of minutes. Otherwise your normal WP Cron wouldn't be called as often as it should be and scheduled messages would be sent with big delays.
Same situation here. Please make sure you're calling the WordPress Cron by an external service or your webhoster every couple of minutes.
You are covered. All attachments are stored temporarily in the queue until they are sent along with their corresponding emails.
Queue alerts are a simple and effective way to improve the security of your WordPress installation. Imagine your website starts sending spam through wp_mail(). The Mail Queue would fill up quickly instead of sending everything at once. This gives you time to react, avoid a lot of trouble and can reduce the damage significantly. Queue alerts warn you when the queue grows longer than usual. You configure in the settings at which threshold you want to be alerted. This gives you the chance to review the queue and investigate whether something unusual is happening on the website. Optionally, you can enable automatic pausing when an alert is triggered. In that case the queue stops sending emails until you change the status back to Enabled. Please note: This plugin sends at most one alert every six hours while the queue remains above the configured threshold.
Yes. The Mail Queue can be set to Paused.
This is useful if you want to temporarily stop outgoing delivery without disabling the plugin completely.
Yes, you can add the custom X-Mail-Queue-Prio header set to High to your email. High priority emails are still processed through the normal Mail Queue cycle, but they are sent before normal queued emails. Example 1 (add priority to WooCommerce emails): add_filter('woocommerce_mail_callback_params',function ( $array ) { $prio_header = 'X-Mail-Queue-Prio: High'; if (is_array($array[3])) { $array[3][] = $prio_header; } else { $array[3] .= $array[3] ? "\r\n" : ''; $array[3] .= $prio_header; } return $array; },10,1); Example 2 (add priority to Contact Form 7 form emails):