diff --git a/backend/export.py b/backend/export.py
index c0164172..2c573551 100644
--- a/backend/export.py
+++ b/backend/export.py
@@ -8,7 +8,7 @@ from oasst_backend.database import engine
 from oasst_backend.models import Message, MessageTreeState
 from oasst_backend.models.message_tree_state import State as TreeState
 from oasst_backend.utils import tree_export
-from sqlmodel import Session
+from sqlmodel import Session, not_
 
 
 def fetch_tree_ids(
@@ -38,6 +38,7 @@ def fetch_tree_messages(
     deleted: bool = None,
     prompts_only: bool = False,
     lang: Optional[str] = None,
+    review_result: Optional[bool] = None,
 ) -> List[Message]:
     qry = db.query(Message)
 
@@ -51,6 +52,10 @@ def fetch_tree_messages(
         qry = qry.filter(Message.parent_id.is_(None))
     if lang:
         qry = qry.filter(Message.lang == lang)
+    if review_result is False:
+        qry = qry.filter(not_(Message.review_result), Message.review_count > 2)
+    elif review_result is True:
+        qry = qry.filter(Message.review_result)
 
     return qry.all()
 
@@ -64,16 +69,18 @@ def export_trees(
     prompts_only: bool = False,
     state_filter: Optional[TreeState] = None,
     lang: Optional[str] = None,
+    review_result: Optional[bool] = None,
 ) -> None:
     trees_to_export: List[tree_export.ExportMessageTree] = []
 
-    if user_id:
+    if user_id or review_result is False:
         messages = fetch_tree_messages(
             db,
             user_id=user_id,
             deleted=deleted,
             prompts_only=prompts_only,
             lang=lang,
+            review_result=review_result,
         )
         tree_export.write_messages_to_file(export_file, messages, use_compression)
     else:
@@ -86,6 +93,7 @@ def export_trees(
                 deleted=deleted,
                 prompts_only=prompts_only,
                 lang=None,
+                review_result=review_result,
             )
             for (tree_id, _) in message_tree_ids
         ]
@@ -135,6 +143,16 @@ def parse_args():
         action="store_true",
         help="Export only deleted messages (implies --include-deleted)",
     )
+    parser.add_argument(
+        "--include-spam",
+        action="store_true",
+        help="Export only messages with negative review result.",
+    )
+    parser.add_argument(
+        "--spam-only",
+        action="store_true",
+        help="Export only messages with negative review result (implies --include-spam).",
+    )
     parser.add_argument(
         "--user",
         type=str,
@@ -176,6 +194,12 @@ def main():
     if args.deleted_only:
         deleted = True
 
+    review_result: Optional[bool] = True
+    if args.include_spam:
+        review_result = None
+    if args.spam_only:
+        review_result = False
+
     with Session(engine) as db:
         export_trees(
             db,
@@ -186,6 +210,7 @@ def main():
             prompts_only=args.prompts_only,
             state_filter=state_filter,
             lang=args.lang,
+            review_result=review_result,
         )
 
 
diff --git a/backend/oasst_backend/utils/tree_export.py b/backend/oasst_backend/utils/tree_export.py
index 409d8a22..4aaba92b 100644
--- a/backend/oasst_backend/utils/tree_export.py
+++ b/backend/oasst_backend/utils/tree_export.py
@@ -21,6 +21,7 @@ class ExportMessageNode(BaseModel):
     role: str
     lang: str | None
     review_count: int | None
+    review_result: bool | None
     rank: int | None
     synthetic: bool | None
     model_name: str | None
@@ -36,6 +37,7 @@ class ExportMessageNode(BaseModel):
             role=message.role,
             lang=message.lang,
             review_count=message.review_count,
+            review_result=message.review_result if message.review_result or message.review_count > 2 else None,
             synthetic=message.synthetic,
             model_name=message.model_name,
             emojis=message.emojis,