EasyPG API is a superset of PGG and pgg-epg.el provides nothing but
compatibility with PGG.
-Limitations of PGG
+*** Limitations of PGG
-- PGG doesn't have a user interface to select keys for typical
- cryptographic operations
-- PGG can't handle messages signed with multiple keys correctly
-- PGG trusts any keys for encryption
+As I noted "PGG is outdated PGP library" above, PGG has several
+limitations. For example
+
+- PGG can't handle a message signed with multiple keys.
+- PGG can't prompt a user which key is being used.
+- PGG can't create a binary PGP messages.
+- PGG doesn't provide a way to select keys per cryptographic operation.
+- PGG ignores GnuPG's trust metrics.
** SEMI based MUA