1 files changed, 4 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL
index 00fb083a6..b2156e528 100644
--- a/INSTALL
+++ b/INSTALL
@@ -15,6 +15,10 @@ REQUIREMENTS
    - PCRE, DOM, JSON, XML, Session, Sockets (required)
    - libiconv (recommended)
    - mbstring, fileinfo, mcrypt (optional)
+* PEAR packages distributed with Roundcube or external:
+   - MDB2 2.5.0 or newer
+   - Mail_Mime 1.6.0 or newer
+   - Net_SMTP 1.4.1 or newer
 * php.ini options (see .htaccess file):
    - error_reporting E_ALL & ~E_NOTICE (or lower)
    - memory_limit>16MB (increase as suitable to support large attachments)