diff --git a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/OnboardingFunctions.java b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/OnboardingFunctions.java
index c8de42955..aabe12af4 100644
--- a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/OnboardingFunctions.java
+++ b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/OnboardingFunctions.java
@@ -39,11 +39,15 @@ public class OnboardingFunctions {
     public static final String SEND_MAIL_REGISTRATION_REQUEST_ACTIVITY_NAME = "SendMailRegistrationRequest";
     public static final String SEND_MAIL_REGISTRATION_APPROVE_ACTIVITY_NAME = "SendMailRegistrationApprove";
     public static final String SEND_MAIL_ONBOARDING_APPROVE_ACTIVITY_NAME = "SendMailOnboardingApprove";
-    @Inject
-    OnboardingService service;
 
-    @Inject
-    ObjectMapper objectMapper;
+    private final OnboardingService service;
+
+    private final ObjectMapper objectMapper;
+
+    public OnboardingFunctions(OnboardingService service, ObjectMapper objectMapper) {
+        this.service = service;
+        this.objectMapper = objectMapper;
+    }
 
     private static final  TaskOptions optionsRetry;
 
diff --git a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/ContractServiceDefault.java b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/ContractServiceDefault.java
index 172628fe0..682b4e391 100644
--- a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/ContractServiceDefault.java
+++ b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/ContractServiceDefault.java
@@ -42,11 +42,14 @@ public class ContractServiceDefault implements ContractService {
     private static final Logger log = LoggerFactory.getLogger(ContractServiceDefault.class);
     public static final String PDF_FORMAT_FILENAME = "%s.pdf";
 
-    @Inject
-    AzureStorageConfig azureStorageConfig;
+    private final AzureStorageConfig azureStorageConfig;
 
-    @Inject
-    AzureBlobClient azureBlobClient;
+    private final AzureBlobClient azureBlobClient;
+
+    public ContractServiceDefault(AzureStorageConfig azureStorageConfig, AzureBlobClient azureBlobClient) {
+        this.azureStorageConfig = azureStorageConfig;
+        this.azureBlobClient = azureBlobClient;
+    }
 
     /**
      * Creates a PDF contract document from a given contract template file and institution data.
diff --git a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/NotificationServiceDefault.java b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/NotificationServiceDefault.java
index 278c587bc..8f493eacb 100644
--- a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/NotificationServiceDefault.java
+++ b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/NotificationServiceDefault.java
@@ -31,17 +31,17 @@ public class NotificationServiceDefault implements NotificationService {
 
     private static final Logger log = LoggerFactory.getLogger(NotificationServiceDefault.class);
 
-    final private MailTemplatePlaceholdersConfig templatePlaceholdersConfig;
-    final private MailTemplatePathConfig templatePathConfig;
-    final private AzureBlobClient azureBlobClient;
-    final private ObjectMapper objectMapper;
-    final private ContractService contractService;
-    final private String senderMail;
-    final private Boolean destinationMailTest;
-    final private String destinationMailTestAddress;
-
-    final private String notificationAdminMail;
-    final private Mailer mailer;
+    private final MailTemplatePlaceholdersConfig templatePlaceholdersConfig;
+    private final MailTemplatePathConfig templatePathConfig;
+    private final AzureBlobClient azureBlobClient;
+    private final ObjectMapper objectMapper;
+    private final ContractService contractService;
+    private final String senderMail;
+    private final Boolean destinationMailTest;
+    private final String destinationMailTestAddress;
+
+    private final String notificationAdminMail;
+    private final Mailer mailer;
 
     public NotificationServiceDefault(MailTemplatePlaceholdersConfig templatePlaceholdersConfig, MailTemplatePathConfig templatePathConfig,
                                       AzureBlobClient azureBlobClient, ObjectMapper objectMapper, Mailer mailer, ContractService contractService,
@@ -158,7 +158,7 @@ private void sendMailWithFile(List<String> destinationMail, String templateName,
 
             log.info("End of sending mail to {}, with subject {}", destinationMail, subject);
         } catch (Exception e) {
-            log.error(ERROR_DURING_SEND_MAIL + ":" + e.getMessage());
+            log.error(String.format("%s: %s", ERROR_DURING_SEND_MAIL, e.getMessage()));
             throw new GenericOnboardingException(ERROR_DURING_SEND_MAIL.getMessage());
         }
     }
diff --git a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/OnboardingService.java b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/OnboardingService.java
index 4fb0a55de..ecdc8f93b 100644
--- a/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/OnboardingService.java
+++ b/apps/onboarding-functions/src/main/java/it/pagopa/selfcare/onboarding/service/OnboardingService.java
@@ -36,6 +36,8 @@ public class OnboardingService {
 
     public static final String USERS_FIELD_LIST = "fiscalCode,familyName,name";
     public static final String TOKEN_DOES_NOT_EXISTS_FOR_ONBOARDING_S = "Token does not exists for onboarding %s";
+    public static final String loggedUserName = "example";
+    public static final String loggedUserSurname = "example";
 
     @RestClient
     @Inject
@@ -119,7 +121,7 @@ public void sendMailRegistration(Onboarding onboarding) {
         Product product = productService.getProduct(onboarding.getProductId());
 
         notificationService.sendMailRegistration(onboarding.getInstitution().getDescription(),
-                onboarding.getInstitution().getDigitalAddress(), "example", "example",
+                onboarding.getInstitution().getDigitalAddress(), loggedUserName, loggedUserSurname,
                 product.getTitle());
 
     }
@@ -131,7 +133,7 @@ public void sendMailRegistrationWithContract(Onboarding onboarding) {
         Product product = productService.getProduct(onboarding.getProductId());
 
         notificationService.sendMailRegistrationWithContract(onboarding.getOnboardingId(),
-                onboarding.getInstitution().getDigitalAddress(), "example", "example",
+                onboarding.getInstitution().getDigitalAddress(), loggedUserName, loggedUserSurname,
                 product.getTitle(), token.getId().toHexString());
     }
 
@@ -155,7 +157,7 @@ public void sendMailRegistrationApprove(Onboarding onboarding) {
         Product product = productService.getProduct(onboarding.getProductId());
 
         notificationService.sendMailRegistrationApprove(onboarding.getInstitution().getDescription(),
-                "example", "example", product.getTitle(), token.getId().toHexString());
+                loggedUserName, loggedUserSurname, product.getTitle(), token.getId().toHexString());
 
     }
 
@@ -166,7 +168,7 @@ public void sendMailOnboardingApprove(Onboarding onboarding) {
         Product product = productService.getProduct(onboarding.getProductId());
 
         notificationService.sendMailOnboardingApprove(onboarding.getInstitution().getDescription(),
-                "example", "example", product.getTitle(), token.getId().toHexString());
+                loggedUserName, loggedUserSurname, product.getTitle(), token.getId().toHexString());
 
     }
 }