diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index a1a48902..c71a2fc9 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2014-2019 Mike Fährmann
+# Copyright 2014-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -170,6 +170,9 @@ class Extractor():
 
     def _init_cookies(self):
         """Populate the session's cookiejar"""
+        if self.cookiedomain is None:
+            return
+
         cookies = self.config("cookies")
         if cookies:
             if isinstance(cookies, dict):
diff --git a/gallery_dl/extractor/deviantart.py b/gallery_dl/extractor/deviantart.py
index 1ac4bfb2..f9501f3e 100644
--- a/gallery_dl/extractor/deviantart.py
+++ b/gallery_dl/extractor/deviantart.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2015-2019 Mike Fährmann
+# Copyright 2015-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -31,6 +31,7 @@ class DeviantartExtractor(Extractor):
     category = "deviantart"
     directory_fmt = ("{category}", "{username}")
     filename_fmt = "{category}_{index}_{title}.{extension}"
+    cookiedomain = None
     root = "https://www.deviantart.com"
 
     def __init__(self, match=None):
diff --git a/gallery_dl/extractor/flickr.py b/gallery_dl/extractor/flickr.py
index bd34bdb9..967fd9c7 100644
--- a/gallery_dl/extractor/flickr.py
+++ b/gallery_dl/extractor/flickr.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2017-2019 Mike Fährmann
+# Copyright 2017-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -16,6 +16,7 @@ class FlickrExtractor(Extractor):
     """Base class for flickr extractors"""
     category = "flickr"
     filename_fmt = "{category}_{id}.{extension}"
+    cookiedomain = None
 
     def __init__(self, match):
         Extractor.__init__(self, match)
diff --git a/gallery_dl/extractor/mastodon.py b/gallery_dl/extractor/mastodon.py
index a325264c..36e0b62d 100644
--- a/gallery_dl/extractor/mastodon.py
+++ b/gallery_dl/extractor/mastodon.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2019 Mike Fährmann
+# Copyright 2019-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -19,6 +19,7 @@ class MastodonExtractor(Extractor):
     directory_fmt = ("mastodon", "{instance}", "{account[username]}")
     filename_fmt = "{category}_{id}_{media[id]}.{extension}"
     archive_fmt = "{media[id]}"
+    cookiedomain = None
     instance = None
     root = None
 
diff --git a/gallery_dl/extractor/pixiv.py b/gallery_dl/extractor/pixiv.py
index 0a642a0b..36fa0fed 100644
--- a/gallery_dl/extractor/pixiv.py
+++ b/gallery_dl/extractor/pixiv.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2014-2019 Mike Fährmann
+# Copyright 2014-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -22,6 +22,7 @@ class PixivExtractor(Extractor):
     directory_fmt = ("{category}", "{user[id]} {user[account]}")
     filename_fmt = "{id}_p{num}.{extension}"
     archive_fmt = "{id}{suffix}.{extension}"
+    cookiedomain = None
 
     def __init__(self, match):
         Extractor.__init__(self, match)
diff --git a/gallery_dl/extractor/reddit.py b/gallery_dl/extractor/reddit.py
index 656148e5..6f186041 100644
--- a/gallery_dl/extractor/reddit.py
+++ b/gallery_dl/extractor/reddit.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2017-2019 Mike Fährmann
+# Copyright 2017-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -17,6 +17,7 @@ import time
 class RedditExtractor(Extractor):
     """Base class for reddit extractors"""
     category = "reddit"
+    cookiedomain = None
 
     def __init__(self, match):
         Extractor.__init__(self, match)
diff --git a/gallery_dl/extractor/smugmug.py b/gallery_dl/extractor/smugmug.py
index 0c13825c..69b8cb90 100644
--- a/gallery_dl/extractor/smugmug.py
+++ b/gallery_dl/extractor/smugmug.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2018-2019 Mike Fährmann
+# Copyright 2018-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -21,6 +21,7 @@ class SmugmugExtractor(Extractor):
     category = "smugmug"
     filename_fmt = ("{category}_{User[NickName]:?/_/}"
                     "{Image[UploadKey]}_{Image[ImageKey]}.{extension}")
+    cookiedomain = None
     empty_user = {
         "Uri": "",
         "ResponseLevel": "Public",
diff --git a/gallery_dl/extractor/tumblr.py b/gallery_dl/extractor/tumblr.py
index 1d37419c..21ea3c32 100644
--- a/gallery_dl/extractor/tumblr.py
+++ b/gallery_dl/extractor/tumblr.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2016-2019 Mike Fährmann
+# Copyright 2016-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -45,6 +45,7 @@ class TumblrExtractor(Extractor):
     directory_fmt = ("{category}", "{name}")
     filename_fmt = "{category}_{blog_name}_{id}_{num:>02}.{extension}"
     archive_fmt = "{id}_{num}"
+    cookiedomain = None
 
     def __init__(self, match):
         Extractor.__init__(self, match)