Default: ``true``.
+ **crypto.gpg_path**
+
+ Name (or full path) of gpg binary to use in verification and
+ decryption of PGP/MIME messages.
+
+ Default: ``gpg``.
+
+ **built_with.<name>**
+
+ Compile time feature <name>. Current possibilities include
+ "compact" (see **notmuch-compact(1)**)
+ and "field_processor" (see **notmuch-search-terms(7)**).
+
+ **query.<name>**
+
+ Expansion for named query called <name>. See
+ **notmuch-search-terms(7)** for more information about named
+ queries.
+
ENVIRONMENT
===========