thunderbird-android/res/menu/message_list_option.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
   <item
        android:id="@+id/compose"
        android:alphabeticShortcut="c"
        android:title="@string/compose_action"
        android:icon="@drawable/ic_action_compose"
        android:showAsAction="always"
    />
    <item
        android:id="@+id/set_sort"
        android:title="@string/sort_by"
        android:icon="@drawable/ic_action_sort"
        android:showAsAction="always" >
		<menu>
            <item
                android:id="@+id/set_sort_date"
                android:title="@string/sort_by_date"
            />
            <item
                android:id="@+id/set_sort_arrival"
                android:title="@string/sort_by_arrival"
            />
            <item
                android:id="@+id/set_sort_subject"
                android:title="@string/sort_by_subject"
            />
            <item
                android:id="@+id/set_sort_sender"
                android:title="@string/sort_by_sender"
            />
            <item
                android:id="@+id/set_sort_flag"
                android:title="@string/sort_by_flag"
            />
            <item
                android:id="@+id/set_sort_unread"
                android:title="@string/sort_by_unread"
            />
            <item
                android:id="@+id/set_sort_attach"
                android:title="@string/sort_by_attach"
            />
        </menu>
    </item>
    <item
        android:id="@+id/select_all"
        android:title="@string/batch_select_all"
        android:icon="@drawable/ic_menu_select_all"
        android:showAsAction="never"
    />
    <item
        android:id="@+id/send_messages"
        android:alphabeticShortcut="r"
        android:title="@string/send_messages_action"
        android:icon="@drawable/ic_action_refresh"
        android:showAsAction="never"
    />
    <item
        android:id="@+id/check_mail"
        android:alphabeticShortcut="r"
        android:title="@string/check_mail_action"
        android:icon="@drawable/ic_action_refresh"
        android:showAsAction="always"
    />
    <item
        android:id="@+id/mark_all_as_read"
        android:title="@string/mark_all_as_read_action"
        android:icon="@drawable/ic_menu_inbox"
        android:showAsAction="never"
    />
    <item
        android:id="@+id/settings"
        android:title="@string/preferences_action"
        android:icon="@drawable/ic_menu_preferences"
        android:showAsAction="never">
        <menu>
            <item
                android:id="@+id/folder_settings"
                android:title="@string/folder_settings_action"
                android:icon="@drawable/ic_menu_preferences"
            />
            <item
                android:id="@+id/account_settings"
                android:title="@string/account_settings_action"
                android:icon="@android:drawable/ic_menu_preferences"
            />
            <item
                android:id="@+id/app_settings"
                android:title="@string/global_settings_action"
                android:icon="@android:drawable/ic_menu_preferences"
            />
        </menu>
    </item>
    <item
        android:id="@+id/expunge"
        android:title="@string/expunge_action"
        android:showAsAction="never"
    />
</menu>