diff --git a/gui.lua b/gui.lua
index 852fe90..44e99d1 100644
--- a/gui.lua
+++ b/gui.lua
@@ -705,7 +705,7 @@ function mail.handle_receivefields(player, formname, fields)
 			local recipients = mail.parse_player_list(fields.to)
 			local isNew = true
 			for _,recipient in ipairs(recipients) do
-				if recipient:split("@")[1] == "" then -- in case of maillist
+				if recipient == "@" .. recipient:split("@")[1] then -- in case of maillist
 					isNew = false
 				else
 					for _,contact in ipairs(contacts) do