diff -r 139b334c9392 -r 07b0a687c01a mercurial/mail.py
--- a/mercurial/mail.py	Thu Nov 26 02:28:42 2020 -0500
+++ b/mercurial/mail.py	Mon Nov 23 11:47:06 2020 -0500
@@ -157,6 +157,8 @@
             password = encoding.strfromlocal(password)
         else:
             password = ui.getpass()
+            if password is not None:
+                password = encoding.strfromlocal(password)
     if username and password:
         ui.note(_(b'(authenticating to mail server as %s)\n') % username)
         username = encoding.strfromlocal(username)