diff --git a/backend/src/services/auth/auth-signup-service.ts b/backend/src/services/auth/auth-signup-service.ts
index be7f5777d..528cb44fa 100644
--- a/backend/src/services/auth/auth-signup-service.ts
+++ b/backend/src/services/auth/auth-signup-service.ts
@@ -231,7 +231,7 @@ export const authSignupServiceFactory = ({
 
     const accessToken = jwt.sign(
       {
-        authMethod: AuthMethod.EMAIL,
+        authMethod: authMethod || AuthMethod.EMAIL,
         authTokenType: AuthTokenType.ACCESS_TOKEN,
         userId: updateduser.info.id,
         tokenVersionId: tokenSession.id,
@@ -244,7 +244,7 @@ export const authSignupServiceFactory = ({
 
     const refreshToken = jwt.sign(
       {
-        authMethod: AuthMethod.EMAIL,
+        authMethod: authMethod || AuthMethod.EMAIL,
         authTokenType: AuthTokenType.REFRESH_TOKEN,
         userId: updateduser.info.id,
         tokenVersionId: tokenSession.id,
diff --git a/backend/src/services/user/user-service.ts b/backend/src/services/user/user-service.ts
index a82259db6..693078fbd 100644
--- a/backend/src/services/user/user-service.ts
+++ b/backend/src/services/user/user-service.ts
@@ -21,6 +21,7 @@ type TUserServiceFactoryDep = {
     | "findOneUserAction"
     | "createUserAction"
     | "findUserEncKeyByUserId"
+    | "delete"
   >;
   userAliasDAL: Pick<TUserAliasDALFactory, "find" | "insertMany">;
   orgMembershipDAL: Pick<TOrgMembershipDALFactory, "find" | "insertMany">;
@@ -85,7 +86,7 @@ export const userServiceFactory = ({
         tx
       );
 
-      // check if there are users with the same email.
+      // check if there are verified users with the same email.
       const users = await userDAL.find(
         {
           email,
@@ -134,6 +135,15 @@ export const userServiceFactory = ({
           );
         }
       } else {
+        await userDAL.delete(
+          {
+            email,
+            isAccepted: false,
+            isEmailVerified: false
+          },
+          tx
+        );
+
         // update current user's username to [email]
         await userDAL.updateById(
           user.id,