All emails and sms received in Roasted.email are not processed in any way. No personal information is collected whatsoever.
Mailboxes and their corresponding emails are destroyed after 7 days.
SMS are destroyed after 2 hours of being received.
Only general system statistics are collected to provide the stats panel. These stats are totally data-free, meaning it's merely a counter to track how many of each the system has received, their not tied to a specific mailbox or phone number.
Check the code on Github.