Mailmeteor is a verified Google Workspace add-on Trusted by 5 million users. Contrary to most email platforms, Mailmeteor only requires the least amount of permissions in order to send emails on your behalf. For that reason, Mailmeteor is the safest mail merge option for Gmail. When installing Mailmeteor on your domain, you can review all permissions required by the add-on. Also, it’s possible to restrict Mailmeteor to specific Organizational Units in your Google Workspace domain if you don’t want everyone to access the add-on.