Update README.md

Author: thoughtsunificator

README.md

@@ -20,6 +20,8 @@ The userscript allows a user to batch unsend DMs in a thread on the web version
 
 Individuals seeking to transition to something like Fediverse and want to "remove" their messages from Meta's database.
 
+> Important: While unsending prevents the other party to read your messages it does not always necessarily mean Instagram has deleted your data so make sure to send a data removal request according to the laws of the country you live in.
+
 ## What's the difference between deleting and unsending?
 
 Deleting a thread will only delete messages on your end but the other party will still be able to read your messages.