function send_xml_form_user_profile_form_alter(&$form, &$form_state){
    $form["#submit"][] = 'send_xml_edit_account_submit_function';
    drupal_set_message('<pre>' . print_r($form['#submit'], TRUE) . '</pre>');
}

function send_xml_edit_account_submit_function($form, &$form_state) {
    drupal_set_message(t("ahoy"));
}

Array
(
     [0] => user_profile_form_submit
     [1] => send_xml_edit_account_submit_function
)

function hook_form_FORM_ID_alter(&$form, &$form_state, $form_id) {
  // your code
}