Insights

Growth Engine Door No. 3 positions itself as a growth engine for purpose-driven brands through clear messaging and smart media, signaling opportunities to partner with organizations aiming to scale impact and ROI.

Notable Clients The portfolio includes large sector-focused clients (NCBA, Texas government entities, healthcare, finance, transportation) suggesting suitability for expansion into public sector, healthcare, and financial services with a similar value proposition.

Full Funnel Services cover performance media, full-funnel creative, and brand development, offering cross-sell potential to clients seeking integrated marketing solutions beyond single-channel campaigns.

Tech Avenues Tech stack featuring Hotjar, HubSpot, AWS, Squarespace, and analytics tools indicates capability to leverage data-driven insights for optimization, enabling upsell to clients seeking measurable impact.

Growth Potential Revenue size and agency scale suggest opportunities to target mid-market brands desiring proven ROI, with a pathway to larger engagements as relationships deepen across public sector, healthcare, and education-oriented clients.

Similar companies to Door No. 3

Door No. 3 Tech Stack

Door No. 3 uses 8 technology products and services including Hotjar, HubSpot Analytics, Linkedin Insight Tag, and more. Explore Door No. 3's tech stack below.

Door No. 3's Email Address Formats

Door No. 3 uses at least 2 email formats:
Door No. 3 Email FormatsExamplePercentage
FLast@dn3austin.comJDoe@dn3austin.com
84%
Last@dn3austin.comDoe@dn3austin.com
16%

Frequently Asked Questions

What is Door No. 3's phone number?

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You can contact Door No. 3's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Door No. 3's official website and social media links?

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Door No. 3's official website is dn3austin.com and has social profiles on LinkedIn.

How much revenue does Door No. 3 generate?

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As of August 2026, Door No. 3's annual revenue is estimated to be $10M - $25M.

What is Door No. 3's SIC code and NAICS code?

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Door No. 3's SIC code is 8742 - Management Consulting Services and NAICS code is 541613 - Marketing Consulting Services.

How many employees does Door No. 3 have currently?

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As of August 2026, Door No. 3 has approximately 21 employees across 3 continents, including North America, Europe and Asia. Key team members include Chief Executive Officer: A. C., Senior Art Director: I. M. and Senior Account Executive: T. M. Explore Door No. 3's employee directory with LeadIQ.

What industry does Door No. 3 belong to?

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Door No. 3 operates in the Advertising Services industry.

What technology does Door No. 3 use?

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Door No. 3's tech stack includes Hotjar, HubSpot Analytics, Linkedin Insight Tag, Amazon Web Services, HubSpot Content Hub, Squarespace, Google Workspace and Zoom.

What is Door No. 3's email format?

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Door No. 3's email format typically follows the pattern of FLast@dn3austin.com. Find more Door No. 3 email formats with LeadIQ.

When was Door No. 3 founded?

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Door No. 3 was founded in 1994.
Door No. 3 logo

Door No. 3

Advertising ServicesTexas, United States11-50 Employees

Door No. 3 is a growth marketing firm based in Austin, Texas, that focuses on supporting mission-driven brands through performance media, full-funnel creative, and brand development. The firm positions itself as a partner for organizations serving the public good, with a client roster that includes healthcare, government, education savings programs, transit, and other public-interest entities. Its work appears to center on expanding reach and generating measurable taking actions for clients, while refining brand positioning to align with ambitious goals.
 Based in Austin and employing a team in the mid-sized range, Door No. 3 has a history of establishing itself through a sequence of branding and marketing initiatives and has earned recognition from national publications. The company’s recent activity includes launching a lead generation system designed to position a financial institution as an industry expert and to capture potential customers for loan officers, illustrating its blend of brand storytelling and performance marketing.

Section iconCompany Overview

Phone number
SIC Code
8742 - Management Consulting Services
NAICS Code
541613 - Marketing Consulting Services
Founded
1994
Employees
11-50

Section iconFunding & Financials

  • $10M - $25M

    Door No. 3's revenue is estimated to be in the range of $10M - $25M

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