diff --git a/services/frontend/pkg/config/config.go b/services/frontend/pkg/config/config.go
index 96a475fb5c..b9590a4e37 100644
--- a/services/frontend/pkg/config/config.go
+++ b/services/frontend/pkg/config/config.go
@@ -63,6 +63,8 @@ type Config struct {
 
 	Groupware Groupware `yaml:"groupware"`
 
+	OpenXchange OpenXchange `yaml:"open_xchange"`
+
 	Context context.Context `yaml:"-"`
 }
 
@@ -223,3 +225,8 @@ type PasswordPolicy struct {
 type Groupware struct {
 	Enabled bool `yaml:"enabled" env:"FRONTEND_GROUPWARE_ENABLED" desc:"Enable groupware features. Defaults to false." introductionVersion:"3.7.0"`
 }
+
+type OpenXchange struct {
+	Enabled bool   `yaml:"enabled" env:"FRONTEND_OPENXCHANGE_ENABLED" desc:"Enable Open-Xchange integration. Defaults to false." introductionVersion:"%%NEXT_PRODUCTION_VERSION%%"`
+	ApiUrl  string `yaml:"api_url" env:"FRONTEND_OPENXCHANGE_API_URL" desc:"The URL of the Open-Xchange API. Required if Open-Xchange integration is enabled." introductionVersion:"%%NEXT_PRODUCTION_VERSION%%"`
+}
diff --git a/services/frontend/pkg/config/defaults/defaultconfig.go b/services/frontend/pkg/config/defaults/defaultconfig.go
index ee6825caf6..dcac09dfda 100644
--- a/services/frontend/pkg/config/defaults/defaultconfig.go
+++ b/services/frontend/pkg/config/defaults/defaultconfig.go
@@ -158,6 +158,10 @@ func DefaultConfig() *config.Config {
 		Groupware: config.Groupware{
 			Enabled: false,
 		},
+		OpenXchange: config.OpenXchange{
+			Enabled: false,
+			ApiUrl:  "",
+		},
 	}
 }
 
diff --git a/services/frontend/pkg/revaconfig/config.go b/services/frontend/pkg/revaconfig/config.go
index faa7d3b42d..f295110f63 100644
--- a/services/frontend/pkg/revaconfig/config.go
+++ b/services/frontend/pkg/revaconfig/config.go
@@ -343,6 +343,10 @@ func FrontendConfigFromStruct(cfg *config.Config, logger log.Logger) (map[string
 							"groupware": map[string]any{
 								"enabled": cfg.Groupware.Enabled,
 							},
+							"open_xchange": map[string]any{
+								"enabled": cfg.OpenXchange.Enabled,
+								"api_url": cfg.OpenXchange.ApiUrl,
+							},
 						},
 						"version": map[string]any{
 							"product":        "OpenCloud",