In the alert for update available, use this email body:\\
\\
{{{
CrushFTP Update Available for server: {hostname}
Version: {server_update_available_version}
Info: {server_update_available_html}
}}}
\\
\\
[{Image src='updatealert.jpg.jpg' width='1024' height='..' align='left' style='..' class='..' }]\\
\\

Setting the flag "daily_check_and_auto_update_on_idle" in prefs.XML of CrushFTP v11.2.3_19+ will do automated daily checks and updates.