diff --git a/README.md b/README.md
index 6a544f8..af0b473 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,48 @@
 
 Convert MMSd MMS file to mbox.
 
+## installation
+
+### dependancy
+
+ - python3 
+ - python3-watchdog (apt install python3-watchdog)
+ - python-messaging (https://www.github.com/davegermiquet/python-messaging.git)
+ - marrow.mailer (pip install marrow.mailer)
+
+### setup
+Install the dependancy and mms2mail: 
+```
+sudo apt install python3-watchdog # pip install --user watchdog
+pip install --user marrow-mailer
+
+git clone https://www.github.com/davegermiquet/python-messaging.git
+cd python-messaging
+python3 setup.py install --user
+
+mkdir -p ~/.local/bin
+cp mms2mail ~/.local/bin
+```
+To enable the daemon mode in systemd user : 
+```
+mkdir -p ~/.config/systemd/user
+cp mms2mail.service ~/.config/systemd/user/
+systemctl --user daemon-reload 
+systemctl --user enable mms2mail
+systemctl --user start mms2mail
+```
+  
+### config
+An optional configuration file can be put in the home folder : ```$HOME/.mms/modemmanager/mms2mail.ini```. The default value are : 
+
+```
+[mail]
+mailbox = /var/mail/$USER  ; the mailbox where mms are appended
+user = $USER               ; the user account specified as recipient
+domain = $HOSTNAME         ; the domain part appended to phone number and user
+attach_mms = false         ; whether to attach the full mms binary file
+```
+
 ## usage 
 
 mms2mail [-h] [-d | -f FILE]
@@ -11,20 +53,3 @@ optional arguments:
   -d, --daemon          watch for new mms in the mmsd storage folder
   -f FILE, --file FILE  parse a single mms file
 
-## dependancy
-
- - python3 
- - python3-watchdog (apt install python3-watchdog)
- - python-messaging (https://www.github.com/davegermiquet/python-messaging.git)
- - marrow.mailer (pip install marrow.mailer)
-  
-## config
-```$HOME/.mms/modemmanager/mms2mail.ini```
-
-```
-[mail]
-mailbox = /var/mail/mobian
-account = mobian
-domain = "mobian.lan"
-attach_mms = false
-```
diff --git a/mms2mail.service b/mms2mail.service
index 34579e3..4f24954 100644
--- a/mms2mail.service
+++ b/mms2mail.service
@@ -3,7 +3,7 @@ Description=Multimedia Messaging Service to Mail converter Daemon
 After=mmsd.service
 
 [Service]
-ExecStart=mms2mail -d
+ExecStart=python3 %h/.local/bin/mms2mail -d
 
 Restart=on-failure
 RestartSec=10s