- decrypt it while reindexing. If ``auto``, and notmuch already
- knows about a session key for the message, it will try
- decrypting using that session key but will not try to access
- the user's secret keys. If decryption is successful, index
- the cleartext itself.
+ decrypt it while reindexing, stashing any session keys
+ discovered. If ``auto``, and notmuch already knows about a
+ session key for the message, it will try decrypting using that
+ session key but will not try to access the user's secret keys.
+ If decryption is successful, index the cleartext itself.
+
+ ``nostash`` is the same as ``true`` except that it will not
+ stash newly-discovered session keys in the database.