Susan Kitchens of 2020 Hindsight forwarded this news from the Pasadena Public Library:
Pasadena Public Library announces Email Notification Service
The Pasadena Public Library is pleased to announce the launch of our new Email Notification Service. As of Monday, April 9, 2007, patrons like you who previously supplied us with an email address will begin receiving Hold and Overdue notices via email rather than the traditional postcard format….
More information: Pasadena Public Library: Notice delivery preference