diff --git a/examples/docker-compose.mysql.yml b/examples/docker-compose.mysql.yml
index c784fdf..74b5963 100644
--- a/examples/docker-compose.mysql.yml
+++ b/examples/docker-compose.mysql.yml
@@ -9,16 +9,17 @@ services:
     ports:
       - "80:80"
     environment:
-      - "REPORT_DB_HOST=db"
-      - "REPORT_DB_PORT=3306"
-      - "REPORT_DB_NAME=dmarc_report"
-      - "REPORT_DB_USER=dmarc_report"
-      - "REPORT_DB_PASS=${DMARC_DB_PASSWORD}"
-      - "PARSER_IMAP_SERVER=mail"
-      - "PARSER_IMAP_PORT=143"
-      - "PARSER_IMAP_USER=${DMARC_EMAIL}"
-      - "PARSER_IMAP_PASS=${DMARC_PASSWORD}"
-      - "PARSER_IMAP_READ_FOLDER=Inbox"
+      - "REPORT_DB_HOST=${DB_HOST:-db}"
+      - "REPORT_DB_TYPE=${DB_TYPE:-mysql}"
+      - "REPORT_DB_PORT=${DB_PORT:-3306}"
+      - "REPORT_DB_NAME=${DB_NAME:-dmarc_report}"
+      - "REPORT_DB_USER=${DB_USER:-dmarc_report}"
+      - "REPORT_DB_PASS=${DB_PASSWORD}"
+      - "PARSER_IMAP_SERVER=${IMAP_SERVER}"
+      - "PARSER_IMAP_PORT=${IMAP_PORT:-993}"
+      - "PARSER_IMAP_USER=${IMAP_USER}"
+      - "PARSER_IMAP_PASS=${IMAP_PASSWORD}"
+      - "PARSER_IMAP_READ_FOLDER=${IMAP_READ_FOLDER:-Inbox}"
       - "PARSER_IMAP_MOVE_FOLDER=${IMAP_MOVE_FOLDER:-processed}"
       - "PARSER_IMAP_MOVE_FOLDER_ERR=${IMAP_MOVE_FOLDER_ERR:-error}"
 
diff --git a/examples/docker-compose.postgres.yml b/examples/docker-compose.postgres.yml
index 8dba293..42cead9 100644
--- a/examples/docker-compose.postgres.yml
+++ b/examples/docker-compose.postgres.yml
@@ -9,16 +9,17 @@ services:
     ports:
       - "80:80"
     environment:
-      - "REPORT_DB_TYPE=pgsql"
-      - "REPORT_DB_PORT=5432"
-      - "REPORT_DB_NAME=dmarc_report"
-      - "REPORT_DB_USER=dmarc_report"
-      - "REPORT_DB_PASS=${DMARC_DB_PASSWORD}"
+      - "REPORT_DB_HOST=${DB_HOST:-db}"
+      - "REPORT_DB_TYPE=${DB_TYPE:-mysql}"
+      - "REPORT_DB_PORT=${DB_PORT:-3306}"
+      - "REPORT_DB_NAME=${DB_NAME:-dmarc_report}"
+      - "REPORT_DB_USER=${DB_USER:-dmarc_report}"
+      - "REPORT_DB_PASS=${DB_PASSWORD}"
       - "PARSER_IMAP_SERVER=${IMAP_SERVER}"
       - "PARSER_IMAP_PORT=${IMAP_PORT:-993}"
-      - "PARSER_IMAP_USER=${DMARC_EMAIL}"
-      - "PARSER_IMAP_PASS=${DMARC_PASSWORD}"
-      - "PARSER_IMAP_READ_FOLDER=Inbox"
+      - "PARSER_IMAP_USER=${IMAP_USER}"
+      - "PARSER_IMAP_PASS=${IMAP_PASSWORD}"
+      - "PARSER_IMAP_READ_FOLDER=${IMAP_READ_FOLDER:-Inbox}"
       - "PARSER_IMAP_MOVE_FOLDER=${IMAP_MOVE_FOLDER:-processed}"
       - "PARSER_IMAP_MOVE_FOLDER_ERR=${IMAP_MOVE_FOLDER_ERR:-error}"
 
diff --git a/examples/env.example b/examples/env.example
index 67d8cc7..067afc8 100644
--- a/examples/env.example
+++ b/examples/env.example
@@ -1,21 +1,39 @@
+# databse host address
+DB_HOST=
+
+# the database type mysql or pgsql
+DB_TYPE=
+
+# the datbase port (mysql 3306) (pqsql 5432)
+DB_PORT=
+
+# the databse name
+DB_NAME=
+
+# the databse name
+DB_USER=
+
 # mysql root password. Irrelevant if you are using postgres
 ROOT_DB_PASSWORD=
 
-# database password for the dmarc user
-DMARC_DB_PASSWORD=
+# database password for the database user
+DB_PASSWORD=
 
 # the email address receiving the DMARC reports
-DMARC_EMAIL=
+IMAP_USER=
 
 # the password for the email address receiving the DMARC reports
-DMARC_PASSWORD=
+IMAP_PASSWORD=
 
 # the server the email address is hosted on
 IMAP_SERVER=
 
-# optional: default is 993
+# optional: default is 993 ( or 143)
 IMAP_PORT=
 
+# optional: default is "Inbox"
+IMAP_READ_FOLDER
+
 # optional: default is "processed"
 IMAP_MOVE_FOLDER=