| Armadillo Online Marketing: Specializes in opt-in email lists, and related services. |
| Charlwood eMarketing: Online direct response agency specializing in customer relationship management(CRM) solutions, permission email marketing, online contests, email newsletters and promotions. |
| Digital Cement: Helps companies design, write, and evaluate the effectiveness of E-mail and web site content. |
| Direct Qlick: Opt-in email list management, brokerage, broadcast, and tracking services. |
| eMail Lists: An online email marketing solution that enables businesses to build, send and track permission-based opt-in email marketing campaigns. |
| Email Maestro: Ethical permission based opt-in email marketing company, with over 18 million opt-in subscribers. |
| EmailFactory: Viral and relationship marketing services for businesses and organizations. |
| EmailPro: United Kingdom based company offering full service opt-in email marketing services and web site promotions. |
| I-Behavior, Inc.: A cooperative, transactional history database containing consumer buying behavior profiles contributed by member catalog, publishing, and e-tailer companies. |
| iEntry: Free, professionally written newsletters on a variety of topics that go out to millions of opt-in subscribers per month. |
| MailCreations: Specializes in targeted opt-in email lists, co-registration, and email append marketing. |
| Mailtrack: A UK based e-mail marketing company, specializing in opt-in email lists and CRM email delivery software. |
| market1der: Offers design and implementation of opt-in email marketing promotions as well as cd-rom business cards and HTML designed letterheads for email. |
| MeMail: Free email publications delivered directly to your email inbox. News, entertainment, health and fitness, business and financial, and lifestyle. |
| MetaResponse Group: Offers permission based e-mail and direct marketing services including list brokerage and management, e-mail and direct mail lists. |
| North American Mailing Associates: Provides opt-in email marketing lists and email addresses appending to postal addresses. Fresh sources of B2B and B2C opt-in email lists. |
| Opt-Email: Offers targeted Opt-In based Email Marketing |
| Opt-Influence: Supplies opt-in email newsletter services |
| Permission Direct: Provides opt-in email direct marketing services. |
| Promo King: Permission based eclub marketing programs for retail stores and restaurants. |
| Satori Software: Home of Bulk Mailer Plus and MailRoom ToolKit, an address management and postal mailing solution that is compliant with the USPS, Royal Mail and Canada Post. |
| TKL Interactive: Provides opt-in email lists, copywriting, and campaign management services directly to marketing and advertising professionals and agencies. |
| Wall Street List: A double opt-in email marketing, list management, brokerage, and delivery service provider. |
| YesMail: Offers targeted opt-in direct email marketing through campaign building, tracking and list management services. |
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