$ cvs -d:pserver:anonymous@msmtp.cvs.sourceforge.net:/cvsroot/msmtp login
    $ cvs -z3 -d:pserver:anonymous@msmtp.cvs.sourceforge.net:/cvsroot/msmtp co -P msmtp 
    $ cd msmtp
    $ autoreconf -i
    $ ./configure --with-gnome-keyring --prefix=/usr/local/msmtp-cvs
    $ make
    $ sudo make install
    Check that it is properly compiled with keyring support with:
    $ ldd /usr/local/msmtp-cvs/bin/msmtp  | grep keyring
        libgnome-keyring.so.0 => /usr/lib/libgnome-keyring.so.0 (0xb7d2c000)

    $ ./msmtp-keyring-manage-password.py -s --username=myuser --server=smtp.example.com
    Password for user 'myuser' in server 'smtp.example.com' ? 
    Confirmation, Password for user 'myuser' in server 'smtp.example.com' ?
 
    $ ./msmtp-keyring-manage-password.py -g --username=myuser --server=smtp.example.com
 
    Password for user 'myuser' in server 'smtp.example.com' : foo

    #!/usr/bin/python
    # -*- coding: utf-8 -*-
 
    import gnomekeyring as gk, sys, optparse, getpass
 
 
    def set_keyring_password_for_msmtp_user(user, password, server):
 
        # Does it already exist?
        if get_keyring_password_for_msmtp_user(user, server) is not None:
            error_msg = "SMTP password for user '%s' in server '%s' does already exists" %(user, server)
            return (False, error_msg)
 
        # get default keyring name. you can also specify it explicitly.
        keyring = gk.get_default_keyring_sync()
 
        # display name for password.
        display_name = 'SMTP password for %s at %s'%(user, server)
 
        # select type. if you want some kind of "network" password, it seems that
        # appropriate type is network_password because it has a schema already.
        type = gk.ITEM_NETWORK_PASSWORD
 
        usr_attrs = {'user':user, 'server':server, 'protocol':'smtp'}
 
        # Now it gets ready to add into the keyring. Do it.
        # Its id will be returned if success or an exception will be raised
        id = gk.item_create_sync(keyring, type, display_name, usr_attrs, password, False)
        return (True, "")
 
 
    def get_keyring_password_for_msmtp_user(user, server):
 
        try:
            results = gk.find_network_password_sync(user=user, server=server, protocol='smtp')
        except gk.NoMatchError:
            return None
 
        return results[0]["password"]
 
    def main():
        usage = "%prog [-s|-g] --username myuser --server myserver"
 
        parser = optparse.OptionParser(usage=usage)
 
        parser.add_option("-s", "--set-password", action="store_true", dest="setpass", help="Set password for msmtp acount")
        parser.add_option("-g", "--get-password", action="store_true", dest="getpass", help="Get password for msmstp account")
 
        parser.add_option("-u", "--username", action="store", dest="username", help="Username for msmtp account")
        parser.add_option("-e", "--server", action="store", dest="server", help="SMTP server for msmtp account")
 
        (opts, args) = parser.parse_args()
 
        if not opts.setpass and not opts.getpass:
            parser.print_help()
            print "You have to use -s or -g !!"
            return -1
 
        if not opts.username or not opts.server:
            parser.print_help()
            print "You have to use both --username and --server !!"
            return -1
        elif opts.getpass:
            passwd = get_keyring_password_for_msmtp_user(opts.username, opts.server)
            print "Password for user '%s' in server '%s' : %s" %(opts.username, opts.server, passwd)
        else: # setpass
            msg = "Password for user '%s' in server '%s' ? " %(opts.username, opts.server)
            passwd = getpass.getpass(msg)
            passwd_confirmation = getpass.getpass("Confirmation, " + msg)
            if passwd != passwd_confirmation:
                print "Password and password confirmation are different, exiting..."
                return -1
            status_ok, error_msg = set_keyring_password_for_msmtp_user(opts.username, passwd, opts.server)
            if not status_ok:
                print error_msg
                return -1
        return 0
 
 
    if __name__ == '__main__':
        sys.exit(main())