AOL E-Mail Finder
- Locate email addresses of people throughout the United States.
- http://site.aol.com/netfind/emailfinder.adp

InfoSpace Email Search
- Worldwide email directory.
- http://www.infospace.com/home/white-pages/email-search

Bigfoot Directories
- Interactive search of e-mail directory listings.
- http://search.bigfoot.com

MailLocate.com
- Database of new email addresses that match with old ones. Includes anti-spam protection.
- http://www.maillocate.com/

EmailFinder and URLFinder
- Linka old e-mail and web addresses with current information.
- http://www.emailfinder.com

Find mE-Mail
- Search engine connecting old e-mail addresses to new ones. Invites registration of new e-mail addresses.
- http://www.findmemail.com

TowerData
- Email data quality services for businesses: email append, email change of address (ECOA), and email list hygiene.
- http://www.towerdata.com

Free Email Guide
- Guide to free email search engines and directories. Lists the features of each service.
- http://freemailguide.com/free_email_search_engines.html

MESA: Meta Email Search Agent
- For a given name it searches in parallel at (nearly) all available sources of email addresses on the Internet.
- http://mesa.rrzn.uni-hannover.de/

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.
- http://freshaddress.com

EmailChange.com
- Change of email address search engine and registry.
- http://emailchange.com/