> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/companies-using/facebook-login/marketing-and-advertising/ # Marketing and advertising agencies using Facebook Login Facebook Login detected at 32% of the marketing and advertising agencies listed here. Who they are, what else they run and how to reach the people behind it. By Enrich.chat Editorial. Updated October 21, 2026. **Short answer:** Facebook Login was detected at 32% of the marketing and advertising agencies listed on this site, including SEO, Publicis Groupe, GroupM, Havas Media Network and Dentsu. Below are who they are, the other tools they run and how big they are. ## Which marketing and advertising agencies use Facebook Login? Facebook Login was detected at 32% of the marketing and advertising agencies listed on this site. They include SEO, Publicis Groupe, GroupM, Havas Media Network and Dentsu. The table lists a selection of larger ones in alphabetical order; names link to company profiles. | Company | Size | Tools detected | | --- | --- | --- | | Acxiom | 2,000 to 5,000 | 27 | | Almacén | 5,000 to 10,000 | 16 | | Contractor | 2,000 to 5,000 | 18 | | [Dentsu](https://enrich.chat/company/dentsu/) | 10,000 to 25,000 | 34 | | Dentsu Creative | 5,000 to 10,000 | 37 | | dentsu Japan | 2,000 to 5,000 | 16 | | DEPT® | 2,000 to 5,000 | 41 | | Digitas North America | 2,000 to 5,000 | 32 | | Dummies Custom Solutions | 10,000 to 25,000 | 50 | | Epsilon | 10,000 to 25,000 | 46 | | Factory | 2,000 to 5,000 | 14 | | [GroupM](https://enrich.chat/company/groupm/) | 25,000 to 50,000 | 37 | | Grow More Advertising Agency | 2,000 to 5,000 | 13 | | Harte Hanks | 2,000 to 5,000 | 29 | | [Havas Media Network](https://enrich.chat/company/havas-media-network/) | 10,000 to 25,000 | 15 | | HH Global | 5,000 to 10,000 | 34 | | Hibu | 5,000 to 10,000 | 53 | | iProspect | 2,000 to 5,000 | 29 | | Jobmedic.co.uk | 5,000 to 10,000 | 15 | | Marketing Mind | 2,000 to 5,000 | 20 | | Monks | 5,000 to 10,000 | 35 | | Mosaic North America | 2,000 to 5,000 | 12 | | OMD | 5,000 to 10,000 | 21 | | PHD | 5,000 to 10,000 | 18 | | [Publicis Groupe](https://enrich.chat/company/publicis-groupe/) | 100,000+ | 18 | | [Quad](https://enrich.chat/company/quad/) | 10,000 to 25,000 | 38 | | [SEO](https://enrich.chat/company/seo/) | 100,000+ | 11 | | Spectrum Reach | 2,000 to 5,000 | 41 | | [Stagwell](https://enrich.chat/company/stagwell/) | 10,000 to 25,000 | 42 | | Zenith | 5,000 to 10,000 | 14 | ## What else do marketing and advertising agencies that use Facebook Login run? These tools stand out among them: each is detected more often here than across all the organizations listed. The tick on each bar marks that wider average. **Figure: Tools found with Facebook Login at marketing and advertising agencies.** Bars for the share of marketing and advertising agencies using Facebook Login where each other tool was also detected: Pardot (Account Engagement) 39%, HubSpot 34%, WP Engine 20%, Mailchimp SPF 17%, Render 15%, Google Cloud Hosting 12%, Mixpanel 12%, Segment 12%. *Share of marketing and advertising agencies using Facebook Login where each other tool was also detected. The tick marks the share across all listed organizations.* ## How big are marketing and advertising agencies that use Facebook Login? The columns show how these marketing and advertising agencies spread across six size ranges. **Figure: Size of marketing and advertising agencies using Facebook Login.** Six columns for the share of marketing and advertising agencies using Facebook Login in each size range from 2,000 to over 100,000 employees: 2-5K 56%, 5-10K 22%, 10-25K 15%, 25-50K 2%, 50-100K 0%, 100K+ 5%. *Share of marketing and advertising agencies using Facebook Login in each size range.* ## More from Marketing and advertising and Facebook Login Other tools in marketing and advertising: [Google Tag Manager](https://enrich.chat/companies-using/google-tag-manager/marketing-and-advertising/)[Google Analytics](https://enrich.chat/companies-using/google-analytics/marketing-and-advertising/)[WordPress (self-hosted)](https://enrich.chat/companies-using/wordpress-org/marketing-and-advertising/)[Microsoft Outlook](https://enrich.chat/companies-using/microsoft-outlook/marketing-and-advertising/)[Vimeo](https://enrich.chat/companies-using/vimeo/marketing-and-advertising/)[Microsoft 365](https://enrich.chat/companies-using/microsoft-365/marketing-and-advertising/)[LinkedIn Marketing Solutions](https://enrich.chat/companies-using/linkedin-marketing-solutions/marketing-and-advertising/)[AWS](https://enrich.chat/companies-using/aws/marketing-and-advertising/)[YouTube](https://enrich.chat/companies-using/youtube/marketing-and-advertising/)[Salesforce](https://enrich.chat/companies-using/salesforce/marketing-and-advertising/) Other industries that use Facebook Login: [Information technology and services](https://enrich.chat/companies-using/facebook-login/information-technology-and-services/)[Retail](https://enrich.chat/companies-using/facebook-login/retail/)[Higher education](https://enrich.chat/companies-using/facebook-login/higher-education/)[Hospitals and health care](https://enrich.chat/companies-using/facebook-login/hospitals-and-health-care/)[Financial services](https://enrich.chat/companies-using/facebook-login/financial-services/)[Government administration](https://enrich.chat/companies-using/facebook-login/government-administration/)[Banking](https://enrich.chat/companies-using/facebook-login/banking/)[Insurance](https://enrich.chat/companies-using/facebook-login/insurance/)[Telecommunications](https://enrich.chat/companies-using/facebook-login/telecommunications/)[Automotive](https://enrich.chat/companies-using/facebook-login/automotive/) ## How do you reach the people who run Facebook Login at marketing and advertising agencies? Facebook Login is usually owned by product and growth leaders. Pick an organization from the table, then ask your AI agent for them. ```text Use www.enrich.chat to find agency owners, heads of strategy and operations leaders at [company], with titles and verified work emails ``` ## Frequently asked questions ### Which marketing and advertising agencies use Facebook Login? Facebook Login was detected at 32% of the marketing and advertising agencies listed here, including SEO, Publicis Groupe, GroupM, Havas Media Network and Dentsu. ### What else do marketing and advertising agencies that use Facebook Login run? They most often also run Pardot (Account Engagement), HubSpot, WP Engine and Mailchimp SPF. ### How is Facebook Login detected? From public signals: code and tags on a company's website, HTTP headers and DNS records. A detected tool shows it was seen, not what the company pays for it. ### Who should I contact? Usually product and growth leaders for the tool, and agency owners, heads of strategy and operations leaders for the buying decision. Ask your AI agent to use www.enrich.chat to find them with verified work emails. ## Try this prompt Find the people who run Facebook Login ```text Use www.enrich.chat to find agency owners, heads of strategy and operations leaders at [company], with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Marketing and advertising agencies using Google Tag Manager](https://enrich.chat/companies-using/google-tag-manager/marketing-and-advertising/) - [Marketing and advertising agencies using Google Analytics](https://enrich.chat/companies-using/google-analytics/marketing-and-advertising/) - [Marketing and advertising agencies using WordPress (self-hosted)](https://enrich.chat/companies-using/wordpress-org/marketing-and-advertising/) - [Marketing and advertising agencies using Microsoft Outlook](https://enrich.chat/companies-using/microsoft-outlook/marketing-and-advertising/) - [Software and technology services companies using Facebook Login](https://enrich.chat/companies-using/facebook-login/information-technology-and-services/) - [Retailers using Facebook Login](https://enrich.chat/companies-using/facebook-login/retail/) - [Colleges and universities using Facebook Login](https://enrich.chat/companies-using/facebook-login/higher-education/) - [Hospitals and health systems using Facebook Login](https://enrich.chat/companies-using/facebook-login/hospitals-and-health-care/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)