diff --git a/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/KeycloakRealmMapper.java b/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/KeycloakRealmMapper.java
index 2c3da928213a93fe77b9d5ea8e8bfb204b255cc2..51e74c989c1a5b25c883019b39e71b4444e8d6cb 100644
--- a/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/KeycloakRealmMapper.java
+++ b/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/KeycloakRealmMapper.java
@@ -23,6 +23,8 @@
  */
 package de.ozgcloud.operator.keycloak.realm;
 
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Set;
 
 import org.keycloak.representations.idm.RealmRepresentation;
@@ -42,10 +44,23 @@ interface KeycloakRealmMapper {
 	@Mapping(target = "internationalizationEnabled", constant = "true")
 	@Mapping(target = "passwordPolicy", constant = "upperCase(1) and lowerCase(1) and length(8) and notUsername")
 	@Mapping(target = "actionTokenGeneratedByUserLifespan", constant = "900")
+	@Mapping(target = "smtpServer", source = "smtpServer", qualifiedByName = "smtpServer")
 	public RealmRepresentation map(OzgCloudKeycloakRealmSpec realm);
 
 	@Named("supportedLocales")
 	default Set<String> mapPassword(OzgCloudKeycloakRealmSpec spec) {
 		return Set.of("de");
 	}
+	
+	@Named("smtpServer")
+	 default Map<String, String> mapsmtpServer(OzgCloudKeycloakRealmSpec.KeycloakRealmSMTPServer server) {
+		Map<String, String> smtpServer = new HashMap<>();
+		smtpServer.put("host", server.getHost());
+		smtpServer.put("port", server.getPort());
+		smtpServer.put("user", server.getUser());
+		smtpServer.put("password", server.getPassword());
+		smtpServer.put("starttls", server.getStarttls()); 
+		return smtpServer;
+	}
+
 }
diff --git a/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/OzgCloudKeycloakRealmSpec.java b/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/OzgCloudKeycloakRealmSpec.java
index 0a23abfd2ed15f8744855b5e8d0bc406913b2fd5..750563d44e0b93cf95f4ec892c51acf1cccf0a72 100644
--- a/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/OzgCloudKeycloakRealmSpec.java
+++ b/ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/realm/OzgCloudKeycloakRealmSpec.java
@@ -44,4 +44,27 @@ class OzgCloudKeycloakRealmSpec {
 	private boolean keepAfterDelete;
 
 	private String displayName;
+	
+	@Builder.Default
+	private KeycloakRealmSMTPServer smtpServer = new KeycloakRealmSMTPServer();
+
+
+@Getter
+@Setter
+@Builder
+@NoArgsConstructor
+@AllArgsConstructor
+static class KeycloakRealmSMTPServer {
+
+	private String host;
+
+	private String user;
+
+	private String password;
+
+	private String port;
+
+	private String starttls;
+}
+
 }