diff --git a/cps/tasks/mail.py b/cps/tasks/mail.py
index 770087b4..89e9e2f0 100644
--- a/cps/tasks/mail.py
+++ b/cps/tasks/mail.py
@@ -103,7 +103,7 @@ class EmailSSL(EmailBase, smtplib.SMTP_SSL):
 
 
 class TaskEmail(CalibreTask):
-    def __init__(self, subject, filepath, attachment, settings, recipient, taskMessage, text):
+    def __init__(self, subject, filepath, attachment, settings, recipient, taskMessage, text, internal=False):
         super(TaskEmail, self).__init__(taskMessage)
         self.subject = subject
         self.attachment = attachment
diff --git a/optional-requirements.txt b/optional-requirements.txt
index 547f0256..b6fee806 100644
--- a/optional-requirements.txt
+++ b/optional-requirements.txt
@@ -1,9 +1,8 @@
 # GDrive Integration
-google-api-python-client>=1.7.11,<2.1.0
 gevent>20.6.0,<21.2.0
 greenlet>=0.4.17,<1.1.0
 httplib2>=0.9.2,<0.18.0
-# oauth2client>=4.0.0,<4.1.4
+oauth2client>=4.0.0,<4.1.4
 uritemplate>=3.0.0,<3.1.0
 pyasn1-modules>=0.0.8,<0.3.0
 pyasn1>=0.1.9,<0.5.0
@@ -12,6 +11,12 @@ PyYAML>=3.12
 rsa>=3.4.2,<4.1.0
 six>=1.10.0,<1.15.0
 
+# Gdrive and Gmail integration
+google-api-python-client>=1.7.11,<2.1.0
+
+# Gmail
+google-auth-oauthlib>=0.4.3,<0.5.0
+
 # goodreads
 goodreads>=0.3.2,<0.4.0
 python-Levenshtein>=0.12.0,<0.13.0