Campaign Monitor Synchronization
This plugin automatically creates and maintains a mailinglist on Campaign Monitor mirroring the list of WordPress users. Typically this plugin is useful when you have information (or functionality) on your website that…
Consider an alternative
Campaign Monitor Synchronization shows warning signs in 2026 — compare the alternatives below before installing. It runs on 10+ sites, is rated 4.7/5 and was last updated 11 years ago, and scores 29/100 on our health check.
- Small user base (10+ active installs)
- Very few reviews so far
- No update in 10 years
- Only tested up to WordPress 4.4 (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 Campaign Monitor Synchroniz… stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| campaign monitor | >100 |
| mailing list | >100 |
| user management | >100 |
Version adoption
Share of active sites per release.
Rating breakdown
★★★★★★★★★★ 4.7 from 3 reviews
About Campaign Monitor Synchronization
From the official readme · v1.0.15Description
This plugin automatically creates and maintains a mailinglist on Campaign Monitor mirroring the list of WordPress users. Typically this plugin is useful when you have information (or functionality) on your website that is accessible for registered users only, and you want to send email updates about that information (or functionality) to those users alone.
Example use case
For instance, members can subscribe for events on your WordPress website, and you send out announcements to those members using CampaignMonitor. With this plugin you can maintain your list on WordPress, manage their permissions, and the list on Campaign Monitor will always be an exact copy.
Warning
This plugin performs a one-way synchronization from WordPress to Campaign Monitor. For instance, it will remove users from your Campaign Monitor list if they do not exist as users in WordPress. If this behavior is too strict for you, we recommend our other plugin Campaign Monitor Dual Registration .
- Don’t use this plugin in combination with a subscription form that stores subscribers directly in the same CampaignMonitor list.
- Also don’t modify the list in CampaignMonitor directly, thos e changes will be lost. The only exception is when people unsubscribe from the mailinglist, this will be stored in Campaign Monitor only, and can only be changed there.
Technical details
The Campaign Monitor Synchronization plugin checks every 15 minutes whether there has been changes in the user list on WordPress, without contacting Campaign Monitor.
Only if there has been a change, it compares the WordPress user table with the version on Campaign Monitor. This can also be forced by pressing “save and sync” on the plugin options page.
When there are differences only the modifications will be sent to Campaign Monitor in batches using its API. This way the plugin tries to minimise the number of external requests, while maintaining a reasonable level of synchronization.
When a user unsubscribes on the Campaign Monitor website, this will not be overwritten by the plugin, nor will this be stored back in the WordPress database.
Links
Installation
- Register on http://campaignmonitor.com and create a list. Don’t use an existing list, the data will be lost !
- In the list details click the link “change name/type”, there you will find the list ID, it is a 32 character hexadecimal string. Don’t use the list ID in the url!.
- Go to your account settings. There you will find the API key, it is also a 32 character hexadecimal string.
- On your wordpress website, upload
campaign-monitor-synchronization.zipto the/wp-content/plugins/directory - Activate the plugin through the ‘Plugins’ menu in WordPress
- In the plugin options, enter the list ID and API key.
- Select which fields you want to copy to Campaign Monitor. E-mail address will always be copied.
Changelog
1.0
- First commit
1.0.1
- Handle subscriber lists with size >1000
1.0.2
- Solve a conflict with other plugins using the CampaingMonitor API.
1.0.3
- Several fixes.
1.0.4
- Solve more conflicts with other plugins using the CampaingMonitor API.
1.0.5
- Send multiple batches when batch size >1000
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 Campaign Monitor Synchronizat… alternatives
All campaign monitor plugins →
FAQ
Campaign Monitor Synchronization: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 4, 2026
Is Campaign Monitor Synchronization free?
Yes. Campaign Monitor Synchronization is free to download and use from the official WordPress.org plugin directory.
Is Campaign Monitor Synchronization safe to use in 2026?
Campaign Monitor Synchronization shows warning signs in 2026 — compare the alternatives below before installing. It runs on 10+ sites, is rated 4.7/5 and was last updated 11 years ago, and scores 29/100 on our health check.
How many websites use Campaign Monitor Synchronization?
Campaign Monitor Synchronization is active on 10+ WordPress websites and has been downloaded 3,549 times since it launched in March 2014. It was downloaded 47 times in the last 30 days.
Does Campaign Monitor Synchronization work with WordPress 7.1?
Campaign Monitor Synchronization is officially tested up to WordPress 4.4.34, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was Campaign Monitor Synchronization last updated?
The latest version, 1.0.15, was released on December 11, 2015 (11 years ago).
Who makes Campaign Monitor Synchronization?
Campaign Monitor Synchronization is developed and maintained by Carlo Roosen.
What are the best alternatives to Campaign Monitor Synchronization?
The most popular alternatives to Campaign Monitor Synchronization are Campaign Monitor for WordPr… (2K+ installs), Campaign Monitor Forms by O… (200+ installs) and CM Commerce for WooCommerce (90+ installs).
Powered by PageForge
Want thousands of pages that rank like these? Build them in an afternoon.
This directory runs on the same engine as PageForge. Turn any spreadsheet, CSV or API into thousands of fast, SEO-ready WordPress pages — with schema, internal links and AI-written copy baked in.
- CSV, Google Sheets & API data sources
- AI content, schema & internal links per page
- Works with Elementor, Gutenberg, Yoast & Rank Math
- Free on WordPress.org — no credit card
