Insights

Direct Mail Scale Open Letter Marketing specializes in high-volume direct mail with in-house production and a direct mail API, offering scalable campaigns and automation opportunities for clients looking to expand outbound reach.

Real Estate Advantage Owned by a seasoned real estate investor, the company leverages hands on experience to optimize direct mail products, suggesting strong crossSell potential with real estate, property management, and investor clients seeking targeted mail campaigns.

Tech Enablement Utilizes HubSpot analytics and CRM integrations, alongside web optimization and security tools, indicating potential for selling integrated marketing automation, attribution, and secure lead capture solutions.

Growth Potential Revenue range of one to ten million with a small to mid-sized team suggests opportunities to upsell scalable services, premium support, and add-on analytics packages to existing customers as they scale.

Partnership Momentum Recent partnership with Invelo signals openness to channel partnerships; explore co-marketing, referral programs, and vendor partnerships to expand reach and win more direct mail campaigns.

Open Letter Marketing Tech Stack

Open Letter Marketing uses 8 technology products and services including HubSpot Analytics, WP Rocket, RSS, and more. Explore Open Letter Marketing's tech stack below.

  • HubSpot Analytics
    Analytics
  • WP Rocket
    Caching
  • RSS
    Content Management System
  • Webpack
    Development
  • dc.js
    Javascript Graphics
  • HubSpot Chat
    Live Chat
  • reCAPTCHA
    Security
  • HSTS
    Security

Open Letter Marketing's Email Address Formats

Open Letter Marketing uses at least 1 format(s):
Open Letter Marketing Email FormatsExamplePercentage
First@openlettermarketing.comJohn@openlettermarketing.com
100%

Frequently Asked Questions

What is Open Letter Marketing's official website and social media links?

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Open Letter Marketing's official website is openlettermarketing.com and has social profiles on LinkedIn.

How much revenue does Open Letter Marketing generate?

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As of July 2026, Open Letter Marketing's annual revenue is estimated to be $1M - $10M.

What is Open Letter Marketing's NAICS code?

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Open Letter Marketing's NAICS code is 5418 - Advertising, Public Relations, and Related Services.

How many employees does Open Letter Marketing have currently?

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As of July 2026, Open Letter Marketing has approximately 11 employees across 2 continents, including North AmericaAsia. Key team members include Production And Process Manager: K. B.. Explore Open Letter Marketing's employee directory with LeadIQ.

What industry does Open Letter Marketing belong to?

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Open Letter Marketing operates in the Marketing Services industry.

What technology does Open Letter Marketing use?

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Open Letter Marketing's tech stack includes HubSpot AnalyticsWP RocketRSSWebpackdc.jsHubSpot ChatreCAPTCHAHSTS.

What is Open Letter Marketing's email format?

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Open Letter Marketing's email format typically follows the pattern of First@openlettermarketing.com. Find more Open Letter Marketing email formats with LeadIQ.

When was Open Letter Marketing founded?

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Open Letter Marketing was founded in 2016.
Open Letter Marketing logo

Open Letter Marketing

Marketing ServicesMassachusetts, United States11-50 Employees

Open Letter Marketing provides direct mail services at scale, emphasizing speed, reliability, and consistency. From campaign setup to in-house production and delivery, the company manages the end-to-end process to enable clients to send and repeat mailings efficiently. It offers a direct mail API alongside a hands-on service model, supporting both automated workflows and fully managed campaigns.
Based in Lawrence, Massachusetts, the company serves a diverse set of businesses that rely on direct mail as part of their outreach. It is owned and operated by Justin Silverio, a real estate investor, and operates with a small-to-mid-sized team. A 2022 partnership with Invelo, Inc. positioned Open Letter Marketing as a direct mail vendor for that company.

Section iconCompany Overview

NAICS Code
5418 - Advertising, Public Relations, and Related Services
Founded
2016
Employees
11-50

Section iconFunding & Financials

  • $1M - $10M

    Open Letter Marketing's revenue is estimated to be in the range of $1M - $10M

Section iconFunding & Financials

  • $1M - $10M

    Open Letter Marketing's revenue is estimated to be in the range of $1M - $10M

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