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Mailster v4.1.21 - Email Newsletter Plugin For WordPress

Developer: revaxartsCategory: WordPress PluginsTrusted with 559 downloadsPro5 favoritesLatest v4.1.21Updated 1w ago

Mailster WordPress Plugin is an easy to use Email Newsletter Plugin for WordPress.

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Included in every membership plan

From $5.99 / year

Install + auto-update on your sitesIncluded with every membership plan - install from wp-admin with the GPLC Connector: 10 to 40 connected sites depending on the plan (Lite 10, Pro 20, Geek and Lifetime 40).

Requires Freemius Activator v2.13.0.1 to function. Install it first.

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Free - no credits used

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You write, we send.

Mailster WordPress Plugin is an easy to use Email Newsletter Plugin for WordPress. Create, send and track your Newsletter Campaigns without hassle.

If you’re looking to run your WordPress email marketing campaigns from one convenient location, Mailster WordPress Plugin Free fits the bill perfectly, you can control everything from within the Word Press dashboard.

Mailster is a fully featured email newsletter plugin, including auto-responders, that gives you the power of a system like MailChimp, except without a subscription and its all inside of WordPress.

Mailster WordPress Plugin Features

  • Track Opens, Clicks, Unsubscriptions and Bounces
  • Track Countries and Cities
  • Schedule your Campaigns
  • Six types of auto responders
  • Send your latest post to your subscribers
  • Use dynamic and custom Tags (placeholders)
  • Webversion for each Newsletter
  • Embed Newsletter with Shortcodes
  • Forward via Email
  • Share with Social Media Services
  • Unlimited Subscription Forms
  • Sidebar Widgets
  • Single or Double-Opt-in support
  • WYSIWYG Editor with code view
  • Unlimited Color Variations
  • Optional Image embedding
  • Automatic Inline Styles
  • Background Image support
  • Quick Preview

Recent releases

Release history

View all 7 versions
v4.1.21LatestVerified Safe
Oct 19, 20264.7 MB
Fixed
  • retina loading spinner 404 when legacy form styles are printed inline
  • All status filter count on subscribers screen showing 0
  • tags with numeric names (e.g. "2026") can be created and assigned
  • `mailster_list_removed` and `mailster_tag_removed` no longer run when the subscriber was not on that list or tag
  • list-based unsubscribe still succeeds when the subscriber is not on every campaign list
  • image placeholder endpoint no longer allows unbounded image sizes
  • numeric custom date fields now keep date operators, formatted values, and export date formats
Improved
  • subscriber list tags and lists link to a filtered view of matching subscribers
  • tag assign APIs treat integers as tag IDs and strings as tag names — custom code must cast IDs with `(int)` (numeric strings like `"42"` are names, not IDs)
Added
  • bulk actions to add or remove tags on the subscribers list
Oct 6, 20264.7 MB
View changelog
Fixed
  • pasting URLs into module text links in the campaign editor on Firefox
  • backslash before apostrophe in sender name on delivery settings test email
  • accented characters in campaign email body are preserved when saving
  • campaign click links now check lookalike domains and keep percent signs in URLs
  • subscriber conditions and field deletes handle values more safely
  • subscriber import failing when first or last name is empty
  • several AJAX actions and subscriber imports now verify requests before running
Sep 23, 20264.6 MB
View changelog
Fixed
  • date and anniversary workflow triggers now apply custom-field offset when matching subscribers
  • block form preview no longer allows unauthenticated SQL injection via mailster-block-preview
  • campaign builder module titles and content with UTF-8 characters
  • subscriber export download now requires export capability and rejects unsafe filenames
  • template delete no longer allows path traversal outside the templates directory
  • block form placement preview scrolling no longer fails across origins
Improved
  • dependencies

Frequently asked questions

Is Mailster – Email Newsletter Plugin For Wordpress GPL licensed?
Yes, Mailster – Email Newsletter Plugin For Wordpress is distributed under the GNU General Public License (GPL). You can legally use, modify, and redistribute it on unlimited websites.
What is the latest version of Mailster – Email Newsletter Plugin For Wordpress?
The latest version of Mailster – Email Newsletter Plugin For Wordpress on GPLCoffee is v4.1.21 (released Oct 19, 2026, 4.7 MB download size). Every new release is synced automatically, and subscribers can update directly from their WordPress dashboard with the one-click connector plugin.
How much does Mailster – Email Newsletter Plugin For Wordpress cost on GPLCoffee?
Mailster – Email Newsletter Plugin For Wordpress is available for $5.99 for a 1-year license or $15.99 for a lifetime license. Membership plans also include credit-based access so you can download Mailster – Email Newsletter Plugin For Wordpress along with thousands of other plugins, themes, and PHP scripts for a single subscription.
Which WordPress and PHP versions does Mailster – Email Newsletter Plugin For Wordpress support?
The current release of Mailster – Email Newsletter Plugin For Wordpress requires WordPress 6.2 or higher, tested up to WordPress 7.1, PHP 7.4 or higher. Per-release compatibility details are listed in the version history.
Is Mailster – Email Newsletter Plugin For Wordpress safe to download?
Yes. The latest release of Mailster – Email Newsletter Plugin For Wordpress (v4.1.21) was scanned with VirusTotal and came back clean. Scan results are visible on each version page, and releases flagged as malicious are blocked from the catalog.

Auto-updates included

Install it once, update automatically.

The GPLC Connector installs this plugin from your wp-admin and rolls out new versions to your connected sites. Included with every membership plan: 10 to 40 connected sites depending on the plan (Lite 10, Pro 20, Geek and Lifetime 40).