diff --git a/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandler.java b/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandler.java
index b69de76b260..27c62f6d2a6 100644
--- a/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandler.java
+++ b/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandler.java
@@ -1,6 +1,7 @@
 package uk.gov.hmcts.reform.civil.handler.callback.camunda.notification;
 
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import uk.gov.hmcts.reform.ccd.client.model.AboutToStartOrSubmitCallbackResponse;
 import uk.gov.hmcts.reform.ccd.client.model.CallbackResponse;
@@ -29,6 +30,7 @@
 import static uk.gov.hmcts.reform.civil.utils.PartyUtils.getPartyNameBasedOnType;
 import static uk.gov.hmcts.reform.civil.utils.PartyUtils.getResponseIntentionForEmail;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class AcknowledgeClaimApplicantNotificationHandler extends CallbackHandler implements NotificationData {
@@ -67,12 +69,16 @@ private CallbackResponse notifyApplicantSolicitorForClaimAcknowledgement(Callbac
             ? getRespondentSolicitorEmailAddress(caseData)
             : caseData.getApplicantSolicitor1UserDetails().getEmail();
 
-        notificationService.sendMail(
-            recipient,
-            notificationsProperties.getRespondentSolicitorAcknowledgeClaim(),
-            addProperties(caseData),
-            String.format(REFERENCE_TEMPLATE, caseData.getLegacyCaseReference())
-        );
+        if (recipient != null) {
+            notificationService.sendMail(
+                recipient,
+                notificationsProperties.getRespondentSolicitorAcknowledgeClaim(),
+                addProperties(caseData),
+                String.format(REFERENCE_TEMPLATE, caseData.getLegacyCaseReference())
+            );
+        } else {
+            log.info(String.format("Email address is null for %s", caseData.getLegacyCaseReference()));
+        }
         return AboutToStartOrSubmitCallbackResponse.builder().build();
     }
 
diff --git a/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandler.java b/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandler.java
index adade9c1a72..7f8ffaff36d 100644
--- a/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandler.java
+++ b/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandler.java
@@ -2,6 +2,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import uk.gov.hmcts.reform.ccd.client.model.AboutToStartOrSubmitCallbackResponse;
 import uk.gov.hmcts.reform.ccd.client.model.CallbackResponse;
@@ -26,6 +27,7 @@
 import static uk.gov.hmcts.reform.civil.utils.PartyUtils.buildPartiesReferences;
 import static uk.gov.hmcts.reform.civil.utils.PartyUtils.getPartyNameBasedOnType;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class CreateClaimRespondentNotificationHandler extends CallbackHandler implements NotificationData {
@@ -109,7 +111,15 @@ private CallbackResponse notifyARespondentSolicitorForClaimIssue(CallbackParams
                 throw new CallbackException(String.format("Callback handler received illegal event: %s", caseEvent));
         }
 
-        sendNotificationToSolicitor(caseData, recipient);
+        if (recipient != null) {
+            sendNotificationToSolicitor(caseData, recipient);
+        } else {
+            log.info(String.format(
+                "Email address is null for caseEvent: %s for: %s",
+                caseEvent,
+                caseData.getLegacyCaseReference()
+            ));
+        }
 
         return AboutToStartOrSubmitCallbackResponse.builder()
             .data(caseData.toMap(objectMapper))
diff --git a/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandler.java b/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandler.java
index ac57d23a574..488e5641b28 100644
--- a/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandler.java
+++ b/src/main/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandler.java
@@ -2,6 +2,7 @@
 
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import uk.gov.hmcts.reform.ccd.client.model.AboutToStartOrSubmitCallbackResponse;
 import uk.gov.hmcts.reform.ccd.client.model.CallbackResponse;
@@ -30,6 +31,7 @@
 import static uk.gov.hmcts.reform.civil.helpers.DateFormatHelper.formatLocalDate;
 import static uk.gov.hmcts.reform.civil.utils.PartyUtils.buildPartiesReferences;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class DefendantClaimDetailsNotificationHandler extends CallbackHandler implements NotificationData {
@@ -86,12 +88,20 @@ private CallbackResponse notifyRespondentSolicitorForClaimDetails(CallbackParams
         String recipient = getRecipientEmail(caseData, caseEvent);
         String emailTemplate = notificationsProperties.getRespondentSolicitorClaimDetailsEmailTemplate();
 
-        notificationService.sendMail(
-            recipient,
-            emailTemplate,
-            addProperties(caseData),
-            String.format(REFERENCE_TEMPLATE, caseData.getLegacyCaseReference())
-        );
+        if (recipient != null) {
+            notificationService.sendMail(
+                recipient,
+                emailTemplate,
+                addProperties(caseData),
+                String.format(REFERENCE_TEMPLATE, caseData.getLegacyCaseReference())
+            );
+        } else {
+            log.info(String.format(
+                "Email address is null for caseEvent: %s for: %s",
+                caseEvent,
+                caseData.getLegacyCaseReference()
+            ));
+        }
 
         return AboutToStartOrSubmitCallbackResponse.builder()
             .data(caseData.toMap(objectMapper))
diff --git a/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandlerTest.java b/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandlerTest.java
index 3bc6f72a827..d32dd7e979f 100644
--- a/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandlerTest.java
+++ b/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/AcknowledgeClaimApplicantNotificationHandlerTest.java
@@ -10,6 +10,7 @@
 import org.springframework.boot.test.mock.mockito.MockBean;
 import uk.gov.hmcts.reform.ccd.client.model.CallbackRequest;
 import uk.gov.hmcts.reform.civil.callback.CallbackParams;
+import uk.gov.hmcts.reform.civil.model.IdamUserDetails;
 import uk.gov.hmcts.reform.civil.notify.NotificationsProperties;
 import uk.gov.hmcts.reform.civil.enums.MultiPartyScenario;
 import uk.gov.hmcts.reform.civil.enums.YesOrNo;
@@ -25,6 +26,7 @@
 import java.util.Map;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatNoException;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 import static uk.gov.hmcts.reform.civil.callback.CallbackType.ABOUT_TO_SUBMIT;
@@ -85,6 +87,51 @@ void shouldNotifyApplicantSolicitor_whenInvoked() {
             );
         }
 
+        @Test
+        void shouldNotNotifyApplicantSolicitor_whenRecipeintIsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateNotificationAcknowledged()
+                .applicantSolicitor1UserDetails(IdamUserDetails.builder().email(null).build())
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder().of(ABOUT_TO_SUBMIT, caseData).request(
+                    CallbackRequest.builder().eventId("NOTIFY_APPLICANT_SOLICITOR1_FOR_CLAIM_ACKNOWLEDGEMENT").build())
+                .build();
+
+            handler.handle(params);
+
+            assertThatNoException();
+        }
+
+        @Test
+        void shouldNotNotifyRespondentSolicitor_whenRecipeint1IsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateNotificationAcknowledged()
+                .respondentSolicitor1EmailAddress(null)
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder().of(ABOUT_TO_SUBMIT, caseData).request(
+                    CallbackRequest.builder().eventId("NOTIFY_APPLICANT_SOLICITOR1_FOR_CLAIM_ACKNOWLEDGEMENT").build())
+                .build();
+
+            handler.handle(params);
+
+            assertThatNoException();
+        }
+
+        @Test
+        void shouldNotNotifyRespondentSolicitor_whenRecipeint2IsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateNotificationAcknowledged()
+                .respondentSolicitor2EmailAddress(null)
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder().of(ABOUT_TO_SUBMIT, caseData).request(
+                    CallbackRequest.builder().eventId("NOTIFY_APPLICANT_SOLICITOR1_FOR_CLAIM_ACKNOWLEDGEMENT").build())
+                .build();
+
+            handler.handle(params);
+
+            assertThatNoException();
+        }
+
         @Test
         void shouldNotifyRespondentSolicitor_whenInvokedWithCcEvent() {
             CaseData caseData = CaseDataBuilder.builder().atStateNotificationAcknowledged().build();
diff --git a/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandlerTest.java b/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandlerTest.java
index 80ae6965c89..91f50469330 100644
--- a/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandlerTest.java
+++ b/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/CreateClaimRespondentNotificationHandlerTest.java
@@ -9,6 +9,7 @@
 import org.springframework.boot.test.mock.mockito.MockBean;
 import uk.gov.hmcts.reform.ccd.client.model.CallbackRequest;
 import uk.gov.hmcts.reform.civil.callback.CallbackParams;
+import uk.gov.hmcts.reform.civil.model.IdamUserDetails;
 import uk.gov.hmcts.reform.civil.notify.NotificationsProperties;
 import uk.gov.hmcts.reform.civil.handler.callback.BaseCallbackHandlerTest;
 import uk.gov.hmcts.reform.civil.service.FeatureToggleService;
@@ -20,6 +21,7 @@
 import java.util.Map;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatNoException;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 import static uk.gov.hmcts.reform.civil.callback.CallbackType.ABOUT_TO_SUBMIT;
@@ -91,6 +93,46 @@ void shouldNotifyApplicantSolicitor_whenInvokedWithCcEvent() {
             );
         }
 
+        @Test
+        void shouldNotNotify_whenApplicantEmailIsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateRespondentFullDefence()
+                .applicantSolicitor1UserDetails(IdamUserDetails.builder().email(null).build())
+                .build();
+
+            CallbackParams params = CallbackParamsBuilder.builder().of(ABOUT_TO_SUBMIT, caseData).request(
+                CallbackRequest.builder().eventId("NOTIFY_RESPONDENT_SOLICITOR1_FOR_CLAIM_ISSUE_CC").build()).build();
+
+            handler.handle(params);
+            assertThatNoException();
+        }
+
+        @Test
+        void shouldNotNotify_whenRespondent1RecipientIsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateRespondentFullDefence()
+                .respondentSolicitor1EmailAddress(null)
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder().of(ABOUT_TO_SUBMIT, caseData).request(
+                CallbackRequest.builder().eventId("NOTIFY_RESPONDENT_SOLICITOR1_FOR_CLAIM_ISSUE").build()).build();
+
+            handler.handle(params);
+            assertThatNoException();
+        }
+
+        @Test
+        void shouldNotNotify_whenRespondent2RecipientIsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateRespondentFullDefence()
+                .respondentSolicitor2EmailAddress(null)
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder().of(ABOUT_TO_SUBMIT, caseData).request(
+                CallbackRequest.builder().eventId("NOTIFY_RESPONDENT_SOLICITOR1_FOR_CLAIM_ISSUE").build()).build();
+
+            handler.handle(params);
+            assertThatNoException();
+        }
+
         private Map<String, String> getNotificationDataMap(CaseData caseData) {
             return Map.of(
                 CLAIM_REFERENCE_NUMBER, LEGACY_CASE_REFERENCE,
diff --git a/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandlerTest.java b/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandlerTest.java
index 71a92ae6eb6..f86caa31001 100644
--- a/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandlerTest.java
+++ b/src/test/java/uk/gov/hmcts/reform/civil/handler/callback/camunda/notification/DefendantClaimDetailsNotificationHandlerTest.java
@@ -10,6 +10,7 @@
 import uk.gov.hmcts.reform.ccd.client.model.CallbackRequest;
 import uk.gov.hmcts.reform.civil.callback.CallbackParams;
 import uk.gov.hmcts.reform.civil.config.ToggleConfiguration;
+import uk.gov.hmcts.reform.civil.model.IdamUserDetails;
 import uk.gov.hmcts.reform.civil.notify.NotificationsProperties;
 import uk.gov.hmcts.reform.civil.handler.callback.BaseCallbackHandlerTest;
 import uk.gov.hmcts.reform.civil.model.CaseData;
@@ -22,6 +23,7 @@
 import java.util.Map;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatNoException;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.verify;
@@ -188,6 +190,57 @@ void shouldNotifyRespondentSolicitor_whenInvokedWithMultipartyEnabled() {
             );
         }
 
+        @Test
+        void shouldNotNotifyRespondentSolicitor_when1v2SSRecipient1IsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateRespondentFullDefenceAfterNotificationAcknowledgement()
+                .respondentSolicitor1EmailAddress(null)
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder()
+                .of(ABOUT_TO_SUBMIT, caseData)
+                .request(CallbackRequest.builder()
+                             .eventId(NOTIFY_RESPONDENT_SOLICITOR1_FOR_CLAIM_DETAILS.name())
+                             .build())
+                .build();
+
+            handler.handle(params);
+            assertThatNoException();
+        }
+
+        @Test
+        void shouldNotNotifyApplicantSolicitor_ApplicantRecipient1IsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateRespondentFullDefenceAfterNotificationAcknowledgement()
+                .applicantSolicitor1UserDetails(IdamUserDetails.builder().email(null).build())
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder()
+                .of(ABOUT_TO_SUBMIT, caseData)
+                .request(CallbackRequest.builder()
+                             .eventId(NOTIFY_RESPONDENT_SOLICITOR1_FOR_CLAIM_DETAILS_CC.name())
+                             .build())
+                .build();
+
+            handler.handle(params);
+            assertThatNoException();
+        }
+
+        @Test
+        void shouldNotNotifyRespondentSolicitor_1v2DSRecipient1IsNull() {
+            CaseData caseData = CaseDataBuilder.builder()
+                .atStateRespondentFullDefenceAfterNotificationAcknowledgement()
+                .respondentSolicitor2EmailAddress(null)
+                .build();
+            CallbackParams params = CallbackParamsBuilder.builder()
+                .of(ABOUT_TO_SUBMIT, caseData)
+                .request(CallbackRequest.builder()
+                             .eventId(NOTIFY_RESPONDENT_SOLICITOR2_FOR_CLAIM_DETAILS.name())
+                             .build())
+                .build();
+
+            handler.handle(params);
+            assertThatNoException();
+        }
+
     }
 
     @Test