FreshAddress.com - A free change of email address directory where you can search by name or old email address. Email appending, ECOA and list hygiene services available for businesses.
Find Email Addresses - Directory of places that allow you look up E-mail addresses
MESA: Meta Email Search Agent - For a given name it searches in parallel at (nearly) all available sources of email addresses on the Internet.
Free Email Guide - Guide to free email search engines and directories. Lists the features of each service.
TowerData - Email data quality services for businesses: email append, email change of address (ECOA), and email list hygiene.
Find mE-Mail - Search engine connecting old e-mail addresses to new ones. Invites registration of new e-mail addresses.
EmailFinder and URLFinder - Linka old e-mail and web addresses with current information.
MailLocate.com - Database of new email addresses that match with old ones. Includes anti-spam protection.
Bigfoot Directories - Interactive search of e-mail directory listings.
InfoSpace Email Search - Worldwide email directory.
AOL E-Mail Finder - Locate email addresses of people throughout the United States.