diff --git a/README.md b/README.md
index b33e7a6..78c60ec 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,9 @@
 disposable-email-domains
 ========================
 
-This repo contains list of disposable domains often used to register dummy users in order to spam/abuse some services. I collected them to filter allowed domains for new user registration at usegalaxy.org
+This repo contains a list of disposable and temporary email address domains often used to register dummy users in order to spam/abuse some services. Also useful for filtering your email list to increase open rates (sending email to these domains likely will not be opened).
+
+I originally collected them to filter allowed domains for new user registration at usegalaxy.org and later merged them with other lists I have found online. I cannot guarantee all of these can still be considered but I did go through all of them at one point.
 
 Feel free to create PR with more or request removing of your domain (with reasons).