1 files changed, 1 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL
index ceb73c3b9..577f3f354 100644
--- a/INSTALL
+++ b/INSTALL
@@ -23,6 +23,7 @@ encryption support
 		- PHP *command line* access with register_argc_argv set to true in the 
 php.ini file
 		- curl, gd, mysql, and openssl extensions
+		- some form of email server or email gateway such that PHP mail() works
 		- mcrypt (optional; used for end-to-end message encryption)
 
 	- Mysql 5.x