# Models Detected core models and extensions in mail. ```mermaid classDiagram class fetchmail_server class ir_actions_server class ir_mail_server class mail_activity class mail_activity_mixin class mail_activity_type class mail_alias class mail_alias_mixin class mail_blacklist class mail_channel class mail_channel_member class mail_channel_rtc_session class mail_composer_mixin class mail_followers class mail_gateway_allowed class mail_guest class mail_ice_server class mail_link_preview class mail_mail class mail_message class mail_message_reaction class mail_message_schedule class mail_message_subtype class mail_notification class mail_render_mixin class mail_shortcode class mail_template class mail_thread class mail_thread_blacklist class mail_thread_cc class mail_tracking_value class publisher_warranty_contract class res_company class res_groups class res_partner class res_users class res_users_settings class res_users_settings_volumes class template_reset_mixin class base class ir_actions_act_window_view class ir_attachment class ir_config_parameter class ir_http class ir_model class ir_model_fields class ir_qweb class ir_ui_view class ir_websocket class mail_render_mixin class mail_thread class res_company class res_config_settings class res_groups ``` Notes - Classes show model technical names; fields omitted for brevity. - Items listed under _inherit are extensions of existing models.