GMail is a popular email tool allowing you to send communications to a large numbers of individuals. With this integration, you can choose which Gmail account to send broadcast emails from.
In order to add a Broadcast Gmail account, you must have an existing Google Account. If you have this and are logged in, you can generate an app password by clicking here. On that page, type your Gmail account in the App Name field and click Create. Use the generated 16 letter password to create your Gmail account in ISP.