ShippingPeanuts.net, from 2006-06-18 to 2019-02-16.
Delivery NotificationDelivery Notification
UPS Delivery Notification, Tracking Number 1Z
EGEG
EGlassToys was another set of domains, both with and without a dash. Going back to at least 2006-01-20, and up to 2019-02-16.
Returned mailReturned mail
Sometimes, when sending emails, the message is not delivered, it does happen. PostMaster@
XDR2NETXDR2NET
XDR2.NET at last since 2005-12-05. XDR2NET.com is the Blog site, started 2012-12-18.