Mail Queue

2025-08-06 WP免费插件库 7

This plugin will improve the security of your WordPress website, by delaying the email submission of wp_mail().

If your website shows any strange behaviour, e.g. a spam bot is trying to flood your contact form, you will be alerted directly.

Intercepts wp_mail() and puts emails into a Queue
Control how many emails and how often emails are sent
Log every email submission of the Queue
Get alerted if your Queue is running full
Get alerted if WordPress is not able to send emails

作者：WDM

截图：

额外信息：

版本 1.4.5

最后更新：4 月前

活跃安装数量 600+

WordPress 版本 5.9 或更高版本

已测试的最高版本为 6.8.2

PHP 版本 7.4 或更高版本

语言

评分：5

各个星级评论数量：100%#5#0%#0#0%#0#0%#0#0%#0

问答：

Do I need to configure anything?

Yes. Once activated please go into the Settings of the Plugin to do some configurations.

You can enable the Queue, control how many emails and how often they should be sent.

You can enable the Alerting feature and control at which point exactly you want to be alerted.

How does this plugin work?

If enabled this plugin intercepts the wp_mail() function. Instead of sending the mails directly, it stores them in the database and sends them step by step with a delay during the WP Cron.

Does this plugin change the way HOW the emails are sent?

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.

Does this plugin work, if I have a caching Plugin installed?

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.

What about Proxy-Caching, e.g. NGINX?

Same situation here. Please make sure you’re calling the WordPress Cron by an external service or your webhoster every couple of minutes.

My form builder supports attachments. What about them?

You are covered. All attachments are stored temporarily in the queue until they are sent along with their corresponding emails.

What are Queue alerts?

This is a simple and effective way to improve the security of your WordPress installation.

Imagine: In case your website is sending spam through wp_mail(), the email Queue would fill up very quickly preventing your website from sending so many spam emails at once. This gives you time and avoids a lot of trouble.

Queue Alerts warn you, if the Queue is longer than usal. You decide at which point you want to be alerted. So you get the chance to have a look if there might be something wrong on the website.

Can I add emails with a high priority to the queue?

Yes, you can add the custom X-Mail-Queue-Prio header set to High to your email. High priority emails will be sent through the standard Mail Queue sending cycle but before all normal emails lacking a priority header in the queue.

Example 1 (add priority to Woocommerce emails):

Example 2 (add priority to Contact Form 7 form emails):

When editing a form in Contact Form 7 just add an additional line to the
Additional Headers field under the Mail tab panel.

Example 3 (add priority to WordPress reset password emails):

Can I send emails instantly without going through the queue?

Yes, this is possible (if you absolutely need to do this).

For this you can add the custom X-Mail-Queue-Prio header set to Instant to your email. These emails are sent instantly circumventing the mail queue. They still appear in the Mail Queue log flagged as instant.

Mind that this is a potential security risk and should be considered carefully. Please use only as an exception.

Example 1 (instantly send Woocommerce emails):

Example 2 (instantly send Contact Form 7 form emails):

When editing a form in Contact Form 7 just add an additional line to the
Additional Headers field under the Mail tab panel.

Example 3 (instantly send WordPress reset password emails):

Can I still use the wp_mail() function as ususal?

Yes, the wp_mail() function works as expected.

When calling wp_mail() the function returns true as expected. This means the email has been entered into the queue.

Exceptions:

If for some reason the email cannot be entered into the database, wp_mail() will return false.

However if you send an email using the instant header option the email will be considered important.
In this case the email will be sent right away, even if there is an error creating a log for it in the queue.

I have a MultiSite. Can I use Mail Queue?

Yes, but with limitations.

Do not activate the Mail Queue for the whole network. Instead, please activate it for each site separately. Then it will work smoothly. In a future release we’ll add full MultiSite support.

What is Mail Queues favorite song?

插件官方网址：https://cn.wordpress.org/plugins/mail-queue/

下载数量：600

缩略图网址：https://ps.w.org/mail-queue/assets/icon-128x128.gif?rev=2650489

Mail Queue

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