// Set identities access level:
// 0 - many identities with possibility to edit all params
// 1 - many identities with possibility to edit all params but not email address
// 2 - one identity with possibility to edit all params
// 3 - one identity with possibility to edit all params but not email address
$rcmail_config['identities_level'] = 0;
Actually, 1 uses more like the appropriate option, but many many thanks. RoundCube is awesome! Keep up the good work.