Is it necessary to enter my email and password everytime I want to access my email? Can I not just enter the password and have the username remain?
Please look in the main.inc.php installation file:
// Allow browser-autocompletion on login form.
// 0 - disabled, 1 - username and host only, 2 - username, host, password
$rcmail_config['login_autocomplete'] = 0;