diff --git a/apps/account/migrations/0018_user_old_id.py b/apps/account/migrations/0018_user_old_id.py
new file mode 100644
index 00000000..aa409bed
--- /dev/null
+++ b/apps/account/migrations/0018_user_old_id.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.4 on 2019-10-29 08:21
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('account', '0017_merge_20191024_1233'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='user',
+            name='old_id',
+            field=models.IntegerField(blank=True, default=None, null=True),
+        ),
+    ]
diff --git a/apps/account/models.py b/apps/account/models.py
index 2f8c97cc..13943878 100644
--- a/apps/account/models.py
+++ b/apps/account/models.py
@@ -94,6 +94,8 @@ class User(AbstractUser):
     unconfirmed_email = models.EmailField(_('unconfirmed email'), blank=True, null=True, default=None)
     email_confirmed = models.BooleanField(_('email status'), default=False)
     newsletter = models.NullBooleanField(default=True)
+    old_id = models.IntegerField(null=True, blank=True, default=None)
+
 
     EMAIL_FIELD = 'email'
     USERNAME_FIELD = 'username'
diff --git a/apps/news/admin.py b/apps/news/admin.py
index 5c1cbba7..91fb284c 100644
--- a/apps/news/admin.py
+++ b/apps/news/admin.py
@@ -26,6 +26,7 @@ send_email_action.short_description = "Send the selected news by email"
 @admin.register(models.News)
 class NewsAdmin(admin.ModelAdmin):
     """News admin."""
+    raw_id_fields = ('address',)
     actions = [send_email_action]
 
 
diff --git a/apps/transfer/serializers/account.py b/apps/transfer/serializers/account.py
index 123b374b..5b0e1369 100644
--- a/apps/transfer/serializers/account.py
+++ b/apps/transfer/serializers/account.py
@@ -6,17 +6,20 @@ class UserSerializer(serializers.ModelSerializer):
     nickname = serializers.CharField()
     email = serializers.CharField()
     confirmed_at = serializers.DateTimeField()
+    id = serializers.CharField()
 
     class Meta:
         model = User
 
         fields = (
+            "id",
             "nickname",
             "email",
             "confirmed_at"
         )
 
     def validate(self, data):
+        data["old_id"] = data.pop("id")
         data["username"] = self.get_username(data)
         data["email_confirmed"] = self.get_email_confirmed(data)
         data.pop("nickname")
diff --git a/apps/transfer/serializers/notification.py b/apps/transfer/serializers/notification.py
index ccc07eff..c179dd2a 100644
--- a/apps/transfer/serializers/notification.py
+++ b/apps/transfer/serializers/notification.py
@@ -22,7 +22,8 @@ class SubscriberSerializer(serializers.ModelSerializer):
         return data
 
     def create(self, validated_data):
-        Subscriber.objects.create(**validated_data)
+        inst, created = Subscriber.objects.get_or_create(**validated_data)
+        return inst
 
     def get_email(self, obj):
         return obj["email"]