Title: M+M Mailing Author: NET360 Published: September 17, 2026 Last modified: September 17, 2026 --- Search plugins ![](https://ps.w.org/mm-mailing/assets/banner-772x250.png?rev=3699560) ![](https://ps.w.org/mm-mailing/assets/icon-256x256.png?rev=3699560) # M+M Mailing By [NET360](https://profiles.wordpress.org/net360pe/) [Download](https://downloads.wordpress.org/plugin/mm-mailing.1.3.3.zip) * [Details](https://wordpress.org/plugins/mm-mailing/#description) * [Reviews](https://wordpress.org/plugins/mm-mailing/#reviews) * [Installation](https://wordpress.org/plugins/mm-mailing/#installation) * [Development](https://wordpress.org/plugins/mm-mailing/#developers) [Support](https://wordpress.org/support/plugin/mm-mailing/) ## Description M+M Mailing is a WordPress email marketing plugin for managing contacts, mailing lists, campaigns, templates, delivery queues and campaign performance. Features include: * Contact and list management. * CSV contact import with field mapping. * Campaign builder and HTML email editor. * Scheduled campaigns. * Background delivery through WordPress Cron. * Configurable SMTP delivery through WordPress PHPMailer. * Sending queue with retries and error logging. * Open and click tracking. * Unsubscribe and spam-report tracking links. * Campaign statistics and delivery KPIs. * Test email delivery. * Custom contact fields. * Campaign attachments. M+M Mailing uses WordPress APIs and does not require external JavaScript CDNs. ### 1.2.62 * CORRECCIÓN: el Constructor de campañas queda registrado como página administrativa real y ya no se elimina del árbol de submenús, evitando el mensaje de WordPress“ Sorry, you are not allowed to access this page.” al abrir admin.php?page=mm-campaign- builder. * MEJORA: añadido un control de permisos explícito dentro del callback del Constructor de campañas. * MANTENIMIENTO: sincronizada la versión del esquema interno con la versión 1.2.62. ### 1.2.61 * CORRECCIÓN: añadido uninstall.php para eliminar todas las tablas propias de M +M Mailing al desinstalar el plugin. * CORRECCIÓN: también se eliminan opciones, previsualizaciones temporales, transients y eventos WP-Cron propios del plugin. * CORRECCIÓN: inicialización temprana de los filtros de Suscriptores para evitar warnings de variables indefinidas en PHP 8.x. * CORRECCIÓN: optimizada la bandera de plantillas predeterminadas para evitar consultas repetidas en cada carga. * MEJORA: el diagnóstico del sistema verifica todas las tablas utilizadas por el plugin. ### 1.2.60 * CORRECCIÓN: el Builder de campañas se registra con un parent válido y se oculta del menú después del registro, evitando valores NULL en get_admin_page_title() de WordPress/PHP 8.2+. * CORRECCIÓN: eliminada la sobrecarga de admin_title que no podía prevenir el warning de strip_tags() porque ocurría antes del filtro. * CORRECCIÓN: sincronizados todos los argumentos de la consulta preparada de Estadísticas con sus 58 placeholders. * PRESERVADO: corrección de campos personalizados de suscriptores al editar contactos. #### 1.2.59 * CORRECCIÓN: ajustados los argumentos de la consulta preparada de Estadísticas para que coincidan exactamente con sus placeholders. * CORRECCIÓN: sincronizada la versión del plugin con Stable tag. * PRESERVADO: corrección de campos personalizados de suscriptores al editar contactos. #### 1.2.58 * CORRECCIÓN: mejoras de diagnóstico y compatibilidad del administrador. #### 1.3.1 * MEJORA: administración bilingüe Español / English según el idioma de WordPress. * AGREGADO: infraestructura i18n, Text Domain y catálogos de idioma. * MEJORA: navegación principal traducible y traducción automática de etiquetas administrativas heredadas. #### 1.2.56 * Plugin Check: corrected remaining dynamic ORDER BY warnings in Segments, Logs and Statistics using fully prepared static SQL ordering conditions. * Preserved existing sorting ASC/DESC, search, filters and pagination. * No campaign selection or statistics functionality was removed. #### 1.2.52 * Plugin Check: resolved the remaining PreparedSQL.NotPrepared report in the selected- list CSV export query. * The dynamically sized IN() placeholder list is generated only from validated integer list IDs and prepared immediately before execution. * Synchronized plugin header, version constant and stable tag to 1.2.52. #### 1.2.51 * Corrected remaining dynamic ORDER BY queries reported by Plugin Check. * Preserved campaign selection, pagination, search and existing functionality. #### 1.2.50 * Sanitized dynamic ORDER BY handling in campaigns, templates, lists, custom fields and subscribers. * Reworked campaign-list relationship queries to use identifier and value placeholders. * Hardened subscriber CSV export queries and synchronized plugin metadata. #### 1.2.39 * Fixed the two remaining PreparedSQL.NotPrepared errors in the campaign builder list queries. * Sanitized campaign list IDs as integers before constructing IN() clauses. * Kept dynamic table identifiers and contact status handling inside prepared queries. * Updated the in-plugin changelog shown at admin.php?page=mm-changelog. #### 1.2.38 * Improved nonce validation and input handling in AJAX/contact search and campaign builder. * Hardened dynamic table identifiers and queue update queries. * Improved prepared SQL handling for campaign list queries. * Added lightweight caching to the import screen data lookups. * Improved database safety checks during table verification. ### 1.2.36 * Hardened admin request handling with explicit input checks, unslashing and sanitization in fields, lists, segments, campaigns, templates and shortcodes. * Removed dead dynamic SQL filter construction from the queue screen and kept queue queries on prepared statements. * Improved prepared SQL handling for plugin-controlled table identifiers and pagination values. * Added nonce protection to custom-field management actions. * Improved tracking and unsubscribe/spam request input handling without changing mailing behavior. ### 1.2.33 * Hardened admin input handling with explicit unslash and sanitization for settings, lists, segments, subscribers, templates and queue actions. * Reworked dynamic queue/list queries to use prepared statements and identifier placeholders. * Added proper segment edit/update handling and nonce protection. * Fixed pagination queries in campaigns and templates. * Improved queue action nonce handling and search/filter sanitization. * Improved campaign/list/template bulk-action database safety. ### 1.2.31 * Fixed the Stable tag mismatch so the readme version matches the plugin header. * Hardened database checks and dynamic queries used by the admin system, statistics and template screens. * Improved Plugin Check compatibility for database parameter handling. * Continued cleanup of database query patterns to reduce false-positive security warnings. ### 1.2.26 * Added three starter email templates: Welcome, Special Promotion and Monthly Newsletter. * Added safe one-time template seeding for new and existing installations without overwriting user-created templates. * Improved the CSV import example with neutral sample contact data. ### 1.2.25 * Fixed bulk list deletion by removing contact and campaign relationships before deleting lists. * Deleting a list no longer deletes subscribers; it only removes their relationship with that list. * Added CSV import recommendations covering file format, UTF-8 encoding, headers, required email field, separators and file-size limits. * Added import-file validation guidance with a 10 MB recommended size and a 25 MB screen limit. ### 1.2.24 * Fixed list selection for Duplicate and Delete actions. * Improved the visual presentation of CSV import mode options. * The list subscriber view now shows all available standard and custom fields. ### 1.2.22 * Unsubscribe changes the contact to Unsubscribed and excludes it from future sends. * Spam reporting records the complaint and blocks the contact from future mailings. * Added subscriber states for unsubscribe and spam. * Added friendly URLs and secure tokens for unsubscribe and spam reporting. * Added List-Unsubscribe and List-Unsubscribe-Post headers. ### 1.2.21 * Version visible across all plugin views. * New Cambios y mejoras tab with version history. * 🚀 Cola de Envío label and per-campaign processing controls. #### 1.2.14 * Hardened dynamic SQL filters in subscriber exports, logs, segments and campaign queue generation. * Reworked campaign-builder list selection to use prepared placeholders. * Improved subscriber filtering and ordering query construction. * Reduced Plugin Check database-query findings without changing campaign delivery behavior. #### 1.2.7 * Reworked queue, delivery tracking and test-email handling. * Added reliable WYSIWYG template editing and campaign template loading. * Hardened database queries, scheduled-date handling and tracking pixel delivery. * Added manual queue processing safeguards and improved campaign completion states. #### 1.2.3 * Improved WordPress output escaping across admin screens. * Improved campaign builder attachment output escaping. * Improved system diagnostics output escaping. * Updated WYSIWYG campaign editor compatibility. #### 1.2.2 * Hardened campaign admin output escaping and safe admin URLs. * Replaced nonce field echoing with direct WordPress nonce output. * Improved campaign pagination and metric output escaping. * Replaced JavaScript redirects with safe WordPress redirects. #### 1.2.1 * Reworked queue processing with stale-job recovery and real delivery error capture. * Fixed scheduled campaign queue generation. * Corrected campaign statistics to use sent queue messages as the delivery denominator. * Added a native WordPress WYSIWYG/HTML editor for campaign and template content. * Added template preview and safer template editing. * Improved queue and campaign completion handling. #### 1.1.0 * Fixed campaign queue creation and background processing. * Fixed tracking schema required by open and click statistics. * Added queue retry handling and email delivery logs. * Fixed scheduled campaign queue creation. * Corrected campaign KPI denominators to use successfully sent messages. * Added database migrations for existing installations. * Removed external JavaScript CDN dependencies from the admin. * Added GPL license metadata and WordPress.org readme information. ## Screenshots [[ [[ [[ [[ [[ ## Installation 1. Upload the `mm-mailing` folder to `/wp-content/plugins/` or install the ZIP from the WordPress admin. 2. Activate M+M Mailing from Plugins. 3. Open M+M Mailing in the WordPress admin. 4. Configure the sender and, if required, SMTP settings. 5. Create a list and import or add contacts. 6. Create a campaign and send it immediately or schedule it. ## FAQ ### Why are emails not being sent? Check the sender settings, SMTP configuration and the WordPress Cron status. The Queue page also shows pending and failed messages. ### Can I schedule a campaign? Yes. A scheduled campaign creates its queue immediately and waits until the configured date and time before delivery. ### How are opens tracked? The plugin adds a first-party tracking pixel to sent HTML emails. Open tracking depends on the recipient’s email client loading images. ### How are clicks tracked? Links in HTML campaigns are routed through the site’s tracking endpoint before the visitor is redirected to the original destination. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “M+M Mailing” is open source software. The following people have contributed to this plugin. Contributors * [ NET360 ](https://profiles.wordpress.org/net360pe/) * [ netisme ](https://profiles.wordpress.org/net360/) [Translate “M+M Mailing” into your language.](https://translate.wordpress.org/projects/wp-plugins/mm-mailing) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/mm-mailing/), check out the [SVN repository](https://plugins.svn.wordpress.org/mm-mailing/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/mm-mailing/) by [RSS](https://plugins.trac.wordpress.org/log/mm-mailing/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.3.3 * CORRECCIÓN: actualización de numeración de versión para la publicación de WordPress. org. * PRESERVADO: todas las funcionalidades y correcciones de la versión estable 1.2.62, sin cambios funcionales. ## Meta * Version **1.3.3** * Last updated **15 hours ago** * Active installations **Fewer than 10** * WordPress version ** 6.5 or higher ** * Tested up to **7.1** * PHP version ** 7.4 or higher ** * Tags * [campaigns](https://wordpress.org/plugins/tags/campaigns/)[Email Marketing](https://wordpress.org/plugins/tags/email-marketing/) [mailing](https://wordpress.org/plugins/tags/mailing/)[newsletter](https://wordpress.org/plugins/tags/newsletter/) [smtp](https://wordpress.org/plugins/tags/smtp/) * [Advanced View](https://wordpress.org/plugins/mm-mailing/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/mm-mailing/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/mm-mailing/reviews/) ## Contributors * [ NET360 ](https://profiles.wordpress.org/net360pe/) * [ netisme ](https://profiles.wordpress.org/net360/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/mm-mailing/)