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+# Thunderbird Configuration on Windows for Secure Mail
+[[Prev|thunderbird8]] | *step 9 of 17* | [[Next|thunderbird10]]
+
+## Set OpenPGP Options for your e-mail account
+
+ 1. Edit the new configuration option for OpenPGP Security under
+ *Edit | Account Settings* (then *Server Settings* which
+ corresponds to your e-mail account)
+ * (./) Enable OpenPGP support
+ * The default *Use email address of this identity to identify
+ OpenPGP key* is fine because GPG can lookup your Key ID from
+ your e-mail address.
+ * (./) Sign encrypted messages by default
+ * (./) Use PGP/MIME by default (this is very important /!\ )
+ 1. Proceed to the [[Next|thunderbird10]] step
+
+[[!img tbird9.png align=left]]