http://xckkoskvvw6ipkteupckakhhewz3rg3ghwkajw4swzgznu4724bzxyid.onion/faq.php
If you need insurance, it's usually better to trust a friend with your secret rather than us. As mentioned before: we do not back up our database. So if shit hits the fan and the database is lost, your delayed messages may be deleted before being delivered. If you chose to send those messages to a private box and someone with the key to that box decides to nuke it, this will also nuke your own delayed message that they still have not...