diff --git a/Home.md b/Home.md
index 358846d..a59a916 100644
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+++ b/Home.md
@@ -78,7 +78,10 @@ greylisting.
 
 * **whitelisted_tos**: List of local email accounts that you don't want greylisting
 for. I use it for whitelisting specific accounts that need to receive
-email. For example alerts at domain.com
+email. For example alerts at domain.com. It can also be used if you receive an inordinate 
+amount of spam on a particutar email address that has no account, and you don't want to 
+bother greylisting it. It will be passed to your SMTP server (or the next part of your 
+Mail Transport chain) for dropping (550: Invalid recipient)
 
 * **whitelisted_domains**: The same but for whole domains. I use it
 regularly for customers that complain about the email delay, usually