thunderbird-android/res/layout/message_view.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@android:color/white">
    <ScrollView
        android:layout_width="fill_parent"
        android:layout_height="0dip"
        android:layout_weight="1"
        android:scrollbarStyle="outsideInset"
        android:fadingEdge="none">
        <LinearLayout
            android:orientation="vertical"
            android:layout_width="fill_parent"
            android:layout_height="0dip"
            android:layout_weight="1">
            <RelativeLayout
                android:layout_width="fill_parent"
                android:layout_height="54px"
                android:paddingTop="4px">
                <Button
                    android:id="@+id/previous"
                    android:text="@string/message_view_prev_action"
                    android:layout_height="wrap_content"
                    android:layout_width="wrap_content"
                    android:minWidth="@dimen/button_minWidth"
                    android:layout_alignParentLeft="true"
                    android:layout_centerVertical="true" />
                <Button
                    android:id="@+id/next"
                    android:text="@string/message_view_next_action"
                    android:layout_height="wrap_content"
                    android:layout_width="wrap_content"
                    android:minWidth="@dimen/button_minWidth"
                    android:layout_alignParentRight="true"
                    android:layout_centerVertical="true" />
            </RelativeLayout>

            <include layout="@layout/message_view_header" />

        </LinearLayout>
    </ScrollView>
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="57px"
        android:background="@drawable/ic_email_thread_open_bottom_default"
        android:gravity="center_vertical">
        <Button
            android:id="@+id/reply"
            android:text="@string/reply_action"
            android:layout_height="wrap_content"
            android:layout_width="0dip"
            android:layout_weight="1" />
        <Button
            android:id="@+id/delete"
            android:text="@string/delete_action"
            android:layout_height="wrap_content"
            android:layout_width="0dip"
            android:layout_weight="1" />
        <Button
            android:id="@+id/forward"
            android:text="@string/forward_action"
            android:layout_height="wrap_content"
            android:layout_width="0dip"
            android:layout_weight="1" />
    </LinearLayout>
</LinearLayout>