# Send Mass Message URL: /api-reference/mass-messaging/sendMassMessage Send a mass message to lists and/or users. You may use both the `userLists` and `userIds` parameters to send the same message to both lists and individual users. *** title: Send Mass Message description: >- Send a mass message to lists and/or users. You may use both the `userLists` and `userIds` parameters to send the same message to both lists and individual users. full: true \_openapi: method: POST route: /api/{account}/mass-messaging toc: \[] structuredData: headings: \[] contents: * content: >- Send a mass message to lists and/or users. You may use both the `userLists` and `userIds` parameters to send the same message to both lists and individual users. *** {/* This file was generated by Fumadocs. Do not edit this file directly. Any changes should be made by running the generation command again. */}