Mailgun for WordPress

2.2.1 (2026-07-09):

• Security fix: add nonce verification and server-side list address validation to the add_list AJAX action to prevent unauthenticated arbitrary list subscription (reported by Pedro Pinho)

2.2.0 (2026-06-30):

• Fix: use only the domain part (not the full URL) when building the Mailgun API request
• Fix: remove automatic key- prefix from API key handling; stored keys that included it may need updating
• Fix: add explicit nullable type hints for PHP 8.4 compatibility
• Fix: correct swapped click/open tracking labels in the settings summary
• Tested and confirmed compatible with WordPress 7.0

2.1.9 (2025-06-24):

• Added fallback option. Merge PR for widget

2.1.8 (2025-05-11):

• Just keep update WP version. And tested compatibility with it

2.1.6 (2025-03-24):

• Added translation for the widget

2.1.6 (2025-03-07):

• Fixed bug with sending test emails (JS error). Basically it’s 2.1.5. Just version updates

2.1.5 (2025-03-06):

• Fixed bug with sending test emails (JS error)

2.1.4 (2025-02-23):

• Implemented coding standard into plugin
• Fixed a few potential warning related to the plugin

2.1.3 (2024-11-27):

• Use password type for API Key field for hide it. Fix warning related co compact() method

2.1.2 (2024-11-17):

• Fixed code. Removed line that try to connect not existing file. Fixed versions in the plugin

2.1.1 (2024-08-17):

• Added fallback to regular mail in case or error during sending email vua API

2.1.0 (2024-07-27):

• Added ability to suppress Track Clicks when we send Reset Password email (it was an issue with domain url in the email)
• Added field to setup Reply-to(header) email for the emails.
• When constants MAILGUN_TRACK_CLICKS, MAILGUN_TRACK_OPENS are used, we disable field on the UI as we do for other fields

2.0.1 (2024-07-17):

• Updated changelog

2.0.0 (2024-07-17):

• Updated plugin version and version compatibility
• Updated tags, located in the svn. Keep only 5 last tags according to WordPress.org rules

1.9.9 (2024-03-13):

• Improve admin notices about not fully configured plugin
• Small code cleaning

1.9.8 (2024-02-25):

• Improve admin notices about not fully configured plugin
• Small code cleaning

1.9.8 (2024-02-25):

• Improve admin notices about not fully configured plugin
• Small code cleaning

1.9.7 (2024-01-03):

• Ensure defaults are always set to remove warnings in PHP 8.1+

1.9.6 (2023-09-10):

• Added typehints to methods
• Added code for making plugin WP VIP GO compatible for the From mail
• Added Toastr for sending nice message instead of using alerts

1.9.5 (2023-06-20):

• Fix bug with sending emails

1.9.4 (2023-06-10):

• Fixed bug Fatal error on lists page when another plugin redeclare wp_mail()

1.9.3 (2023-04-08)

• Fixed Reply-to header. It’s not overridden anymore

1.9.2 (2023-03-28):

• Added action for better dev experience in tracking error mailgun_error_track
• Added header h:Sender

1.9.1 (2023-03-26):

• Remove not needed error logging.
• Fixed bug with Override param for Woocommerce

1.9 (2023-01-18):

• Sanitizing and escaping vars. Possible security issues

1.8.10 (2022-12-26):

• Fixed bug with not overriding from name for Woocommerce

1.8.8 (2022-12-14):

• Fixed bug with removed wp_mail filter

1.8.7 (2022-11-12):

• Fixed bug when field Override “From” Details was not updated

1.8.3 (2022-08-30):

• Plugin refactoring. Widget fixes for working with Legacy Widget Block. PHP8.0 support check

1.8.2 (2022-08-24):

• Plugin refactoring. Small fixes

1.8.1 (2022-08-19):

• backward compatibility with php7.0

1.8.0 (2022-08-18):

• Plugin refactoring. Using new languages constructions. Extended readme. Update version

1.7.9 (2021-05-24):

• API Key description

1.7.8 (2021-05-13):

• Tested WP 5.7.1

1.7.7 (2021-03-16):

• Updated assets, tested WP 5.7

1.7.6 (2021-02-19):

• Sync versions across plugin files

1.7.3 (2021-02-19):

• Update plugin version

1.7.2 (2020-10-07):

• Test plugin with PHP 7.4.
• Test plugin up to WordPress 5.5.1.

1.7.1 (2019-02-07):

• Reinstall settings page for multisites.

1.7 (2019-01-21):

• Remove settings page for multisites.
• Simplify admin notifications.
• Test plugin with PHP 7.2.
• Test plugin up to WordPress 5.0.3.

1.6.1 (2018-10-08):

• Restore Settings page form for all install types.

1.6 (2018-9-21):

• Refactor admin notifications
• Enable Settings page for all WordPress install types
• Enable Test Configuration for all WordPress install types
• Test plugin up to WordPress 4.9.8.

1.5.14 (2018-09-11):

• Force SSL-secured SMTP connections to use port 465 (SMTPS) to connect, 587 for plain and TLS
• Support region endpoint switching for SMTP

1.5.13.1 (2018-08-15):

• Fix line breaks in Test Configuration email

1.5.13 (2018-08-14):

• Default to US region if no region is configured in settings
• Add admin notification about region configuration
• Log an error message when an email is sent with no explicit region configured

1.5.12.3 (2018-08-09):

• Fix Region select menu default when wp-config.php variable is set
• Fix front end email input validation

1.5.12.2 (2018-08-09):

• Fix plugin not saving after update

1.5.12.1 (2018-08-06):

• Fix for backwards compatibility

1.5.12 (2018-08-02):

• Add EU endpoint for Mailgun HTTP API
• Fix broken logo image on Lists page
• Test plugin up to WordPress 4.9.7

1.5.11 (2018-05-30):

• Fix an issue with authentication failing for newer API keys
• Test plugin up to WordPress 4.9.6

1.5.10 (2017-11-22):

• Fix back to settings link on lists page (https://github.com/mailgun/wordpress-plugin/pull/65)
• Fix a bug causing text/html emails to send as both text/plain and text/html parts

1.5.9 (2017-09-13):

• Add a configuration option to allow setting security type for SMTP connection (SSL / TLS)

1.5.8.5 (2017-09-05):

• Change default click tracking setting to htmlonly (https://github.com/mailgun/wordpress-plugin/pull/58)
• Change PHPMailer set-up stanza to use TLS

1.5.8.4 (2017-06-28):

• Packaging fix which takes care of an odd filtering issue (https://wordpress.org/support/topic/1-5-8-3-broke-the-mg_mutate_message_body-filter)

1.5.8.3 (2017-06-13):

• Fix a bug causing only the last header value to be used when multiple headers of the same type are specified (https://wordpress.org/support/topic/bug-with-mg_parse_headers/)
• Added pt_BR translations (thanks @emersonbroga)

1.5.8.2 (2017-02-27):

• Fix a bug causing empty tags to be sent with messages (#51)
• Add mg_mutate_message_body hook to allow other plugins to modify the message body before send
• Add mg_mutate_attachments hook to allow other plugins to modify the message attachments before send
• Fix a bug causing the AJAX test to fail incorrectly.

1.5.8.2 (2017-02-27):

• Fix a bug causing empty tags to be sent with messages (#51)
• Add mg_mutate_message_body hook to allow other plugins to modify the message body before send
• Add mg_mutate_attachments hook to allow other plugins to modify the message attachments before send
• Fix a bug causing the AJAX test to fail incorrectly.

1.5.8.1 (2017-02-06):

• Fix “Undefined property: MailgunAdmin::$hook_suffix” (#48)
• Fix “Undefined variable: from_name on every email process” (API and SMTP) (#49)
• Admin code now loads only on admin user access

1.5.8 (2017-01-23):

• Rewrite a large chunk of old SMTP code
• Fix a bug with SMTP + “override from” that was introduced in 1.5.7
• SMTP debug logging is now controlled by MG_DEBUG_SMTP constant

1.5.7.1 (2017-01-18):

• Fix an odd Undefined property: MailgunAdmin::$defaults when saving config
• Fix strict mode notice for using $mailgun[‘override-from’] without checking isset

1.5.7 (2017-01-04):

• Add better support for using recipient variables for batch mailing.
• Clarify wording on From Address note
• Detect from name and address for phpmailer_init / SMTP now will honour Mailgun “From Name / From Addr” settings
• SMTP configuration test will now provide the error message, if the send fails
• Fix undefined variable: content_type error in wp-mail.php (https://wordpress.org/support/topic/minor-bug-on-version-version-1-5-6/#post-8634762)
• Fix undefined index: override-from error in wp-mail.php (https://wordpress.org/support/topic/php-notice-undefined-index-override-from/)

1.5.6 (2016-12-30):

• Fix a very subtle bug causing fatal errors with older PHP versions < 5.5
• Respect wp_mail_content_type (#37 – @FPCSJames)

1.5.5 (2016-12-27):

• Restructure the admin_notices code
• Restructure the “From Name” / “From Address” code
• Add option to override “From Name” / “From Address” setting set by other plugins
• Fix a bug causing default “From Name” / “From Address” to be always applied in some cases
• Moved plugin header up in entrypoint file (https://wordpress.org/support/topic/plugin-activation-due-to-header/#post-8598062)
• Fixed a bug causing “Override From” to be set to “yes” after upgrades

1.5.4 (2016-12-23):

• Changed some missed bracketed array usages to array() syntax
• Fix wp_mail_from / wp_mail_from_name not working on old PHP / WP versions
• Add a wrapper for using mime_content_type / finfo_file

1.5.3 (2016-12-22):

• Changed all bracketed array usages to array() syntax for older PHP support
• Redesigned Content-Type processing code to not make such large assumptions
• Mailgun logo is now loaded over HTTPS
• Fixed undefined variable issue with from email / from name code

1.5.2 (2016-12-22):

• Added option fields for setting a From name and address

1.5.1 (2016-12-21):

• Fixed an issue causing plugin upgrades from <1.5 -> >=1.5 to deactivate

1.5 (2016-12-19):

• Added Catalan language support (@DavidGarciaCat)
• Added Spanish language support (@DavidGarciaCat)
• Added German language support (@lsinger)
• Fixed incorrect SMTP hostname
• Applied PSR standards across codebase
• Applied open tracking bugfix
• Applied tags bugfix
• Applied Mailgun Lists admin panel bugfix
• Fixed click tracking dropdown
• Fixed click tracking and open tracking
• Now try to process all sent mails as HTML, see L201 wp-mail.php for details
• Mailgun logo now loads on both admin pages 😉
• Now using the Mailgun API v3 endpoint!
• Configuration test will now present either an error from the API or the HTTP response code + message

1.4.1 (2015-12-01):

• Clarify compatibility with WordPress 4.3

1.4 (2015-11-15):

• Added shortcode and widget support for list subscription

1.3.1 (2014-11-19):

• Switched to Semantic Versioning
• Fixed issue with campaigns and tags

1.3 (2014-08-25):

• Added check to ignore empty attachments

1.2 (2014-08-19):

• Fixed errors related to undefined variable. https://github.com/mailgun/wordpress-plugin/pull/3

1.1 (2013-12-09):

• Attachments are now handled properly.
• Added ability to customize tags and campaigns.
• Added ability to toggle URL and open tracking.

1.0 (2012-11-27):

• Re-release to update versioning to start at 1.0 instead of 0.1

0.1 (2012-11-21):

• Initial Release