hiding whisper replys sent from addon

[Tyrolit]

is there any way to hide from the user whispers sent by an addon?

say the addon allows others to whisper the user commands to send back to the other player ,eg a list of zones or recipes the user can make?

at the mo I've got a mod working so others can whisper me for a list of zones for their lvl , or for an automatic invite to a group / raid. this is all fine, but the user of the mod sees the mods replys as sent whispers.

i remember a while back using a dkp addon that allowed whispered enquires and the person with the addon didnt see the replys, is this still possible?