diff --git a/bazarr/app/config.py b/bazarr/app/config.py
index bf128c6f8..ecda2829b 100644
--- a/bazarr/app/config.py
+++ b/bazarr/app/config.py
@@ -290,6 +290,9 @@ class Validator(OriginalValidator):
     Validator('subsync.subsync_movie_threshold', must_exist=True, default=70, is_type_of=int, gte=0, lte=100),
     Validator('subsync.debug', must_exist=True, default=False, is_type_of=bool),
     Validator('subsync.force_audio', must_exist=True, default=False, is_type_of=bool),
+    Validator('subsync.checker', must_exist=True, default={}, is_type_of=dict),
+    Validator('subsync.checker.blacklisted_providers', must_exist=True, default=[], is_type_of=list),
+    Validator('subsync.checker.blacklisted_languages', must_exist=True, default=[], is_type_of=list),
 
     # series_scores section
     Validator('series_scores.hash', must_exist=True, default=359, is_type_of=int),
@@ -774,3 +777,31 @@ def configure_proxy_func():
 def get_scores():
     settings = get_settings()
     return {"movie": settings["movie_scores"], "episode": settings["series_scores"]}
+
+
+def sync_checker(subtitle):
+    " This function can be extended with settings. It only takes a Subtitle argument"
+
+    logging.debug("Checker data [%s] for %s", settings.subsync.checker, subtitle)
+
+    bl_providers = settings.subsync.checker.blacklisted_providers
+
+    # TODO
+    # bl_languages = settings.subsync.checker.blacklisted_languages
+
+    verdicts = set()
+
+    # You can add more inner checkers. The following is a verfy basic one for providers,
+    # but you can make your own functions, etc to handle more complex stuff. You have
+    # subtitle data to compare.
+
+    verdicts.add(subtitle.provider_name not in bl_providers)
+
+    met = False not in verdicts
+
+    if met is True:
+        logging.debug("BAZARR Sync checker passed.")
+        return True
+    else:
+        logging.debug("BAZARR Sync checker not passed. Won't sync.")
+        return False
diff --git a/bazarr/subtitles/processing.py b/bazarr/subtitles/processing.py
index 9325d1904..d7c03ca6e 100644
--- a/bazarr/subtitles/processing.py
+++ b/bazarr/subtitles/processing.py
@@ -3,7 +3,7 @@
 
 import logging
 
-from app.config import settings
+from app.config import settings, sync_checker as _defaul_sync_checker
 from utilities.path_mappings import path_mappings
 from utilities.post_processing import pp_replace, set_chmod
 from languages.get_languages import alpha2_from_alpha3, alpha2_from_language, alpha3_from_language, language_from_alpha3
@@ -69,6 +69,9 @@ def process_subtitle(subtitle, media_type, audio_language, path, max_score, is_u
     message = (f"{downloaded_language}{modifier_string} subtitles {action} from {downloaded_provider} with a score of "
                f"{percent_score}%.")
 
+    sync_checker = _defaul_sync_checker
+    logging.debug("Sync checker: %s", sync_checker)
+
     if media_type == 'series':
         episode_metadata = database.execute(
             select(TableEpisodes.sonarrSeriesId, TableEpisodes.sonarrEpisodeId)
@@ -80,12 +83,13 @@ def process_subtitle(subtitle, media_type, audio_language, path, max_score, is_u
         episode_id = episode_metadata.sonarrEpisodeId
 
         from .sync import sync_subtitles
-        sync_subtitles(video_path=path, srt_path=downloaded_path,
-                       forced=subtitle.language.forced,
-                       srt_lang=downloaded_language_code2, media_type=media_type,
-                       percent_score=percent_score,
-                       sonarr_series_id=episode_metadata.sonarrSeriesId,
-                       sonarr_episode_id=episode_metadata.sonarrEpisodeId)
+        if sync_checker(subtitle) is True:
+            sync_subtitles(video_path=path, srt_path=downloaded_path,
+                           forced=subtitle.language.forced,
+                           srt_lang=downloaded_language_code2, media_type=media_type,
+                           percent_score=percent_score,
+                           sonarr_series_id=episode_metadata.sonarrSeriesId,
+                           sonarr_episode_id=episode_metadata.sonarrEpisodeId)
     else:
         movie_metadata = database.execute(
             select(TableMovies.radarrId)
@@ -97,11 +101,12 @@ def process_subtitle(subtitle, media_type, audio_language, path, max_score, is_u
         episode_id = movie_metadata.radarrId
 
         from .sync import sync_subtitles
-        sync_subtitles(video_path=path, srt_path=downloaded_path,
-                       forced=subtitle.language.forced,
-                       srt_lang=downloaded_language_code2, media_type=media_type,
-                       percent_score=percent_score,
-                       radarr_id=movie_metadata.radarrId)
+        if sync_checker(subtitle) is True:
+            sync_subtitles(video_path=path, srt_path=downloaded_path,
+                           forced=subtitle.language.forced,
+                           srt_lang=downloaded_language_code2, media_type=media_type,
+                           percent_score=percent_score,
+                           radarr_id=movie_metadata.radarrId)
 
     if use_postprocessing is True:
         command = pp_replace(postprocessing_cmd, path, downloaded_path, downloaded_language, downloaded_language_code2,