@LovesTha Once you’ve installed the Rainloop app, go to the Nextcloud Admin Panel, and click on “Additional Settings”, then “Rainloop Settings”. You should be able to find a link to the Rainloop Admin Panel. Open up the Rainloop Admin Panel, and the default user/pass is admin/12345. Configure your email service as required. When you go back to the Rainloop page, it should already be configured with the settings you provide.