Company lists · Data refreshed September 2026
Top 25 Mail house companies based in the United States
RevenueBase identified 2,009 mail house companies headquartered in the United States as of September 2026 and tracks 31,027 professional contacts across them, including 8,741 with verified work emails. Tampa is the largest hub.
This list covers mail house companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest mail house companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 866 contacts → | ||||
Indirect evidence “IWCO has served the needs of North American direct marketers for more than 50 years.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 491 contacts → | ||||
Indirect evidence “We help companies grow their business, drive brand awareness and achieve their marketing goals.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 347 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 333 contacts → | ||||
Indirect evidence “At ABC Printing Company, Making you look your best is our primary goal.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 313 contacts → | ||||
Partial evidence “DME Delivers provides direct mail marketing, web-to-print platforms, large-scale print projects and expertly crafted solutions for the collegiate marketplace and beyond.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 298 contacts → | ||||
Partial evidence “Arandell is a catalog, magazine, and direct mail printing partner with more than a century of experience helping brands succeed through print.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 285 contacts → | ||||
Partial evidence “PostcardMania is a full-service postcard direct mail marketing company and the leader in innovation in the postcard marketing industry.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 284 contacts → | ||||
Indirect evidence “About Us Palm Coast Data is the definitive value leader in magazine, membership, and direct marketing fulfillment.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 274 contacts → | ||||
Partial evidence “Data-Mail is one the nation’s largest full-service, data processing, printing, and direct mail lettershop production facilities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 251 contacts → | ||||
Indirect evidence “Great marketing takes so much more than just delivering the right message at the right time - it’s about making real connections with real people.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 232 contacts → | ||||
Partial evidence “Lob automates and personalizes direct mail at any scale, bringing the speed and features you expect from your digital channels to direct mail for the first time.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 224 contacts → | ||||
Partial evidence “The Standard Group: Print, Mail & Marketing Solutions That Deliver Results The Standard Group helps brands elevate their print and marketing communications through innovation…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 218 contacts → | ||||
Indirect evidence “Allied Printing Services is a full-service commercial print and print-media solutions provider serving brands nationwide across healthcare, retail, education, pharmaceutical…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 209 contacts → | ||||
Indirect evidence “that empowers marketers to envision, create, and explore limitless possibilities-transforming ideas into personalized, high-impact acquisition and loyalty campaigns.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 191 contacts → | ||||
Indirect evidence “Print Happens Here.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 183 contacts → | ||||
Partial evidence “PFL delivers authentic moments through data-driven, automated direct mail.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 178 contacts → | ||||
Indirect evidence “LCP provides a comprehensive platform of marketing communication services for brand leaders.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 172 contacts → | ||||
Indirect evidence “DS Graphics | Universal Wilde is a full service communications company that offers custom web solutions, promotional products, creative services, interactive direct mailers…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 151 contacts → | ||||
Partial evidence “SPC is a leading print media expert for large, national brands and is known for our innovative & award-winning direct mail solutions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 141 contacts → | ||||
Indirect evidence “UNIMAC, a Command Company brings value to clients by providing a "One Source - One Solution" intelligent print and marketing model tailored to fit our client’s specific…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 140 contacts → | ||||
Partial evidence “United Envelope manufactures and prints the highest-quality transactional and direct-mail envelopes for the most demanding and well-regarded brands in the world – from niche…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 132 contacts → | ||||
Indirect evidence “At Wilen Florida we turn concepts into finished products.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 126 contacts → | ||||
Partial evidence “Driven by the industry’s top creative minds and enabled by the latest high-volume variable direct mail technology, Wilen New York provides end-to-end direct marketing solutions…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 126 contacts → | ||||
Indirect evidence “A marketing execution company who has mastered the ability to combine the latest printing technologies with a range of other services focused on maximizing your MROI through the…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 125 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: mail house companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names mail house companies.
- Partial evidence
- Its own public description names part of mail house companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name mail house companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 2,009 mail house companies based in the United States
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Mail house companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,009 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among mail house companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “mail house companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names mail house companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among mail house companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 8,741 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names mail house companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many mail house companies are there based in the United States?
RevenueBase identified 2,009 mail house companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
IWCO, headquartered in Chanhassen, tops this list with the largest team on record.
Which city has the most mail house companies?
Tampa leads with 20 headquartered companies, followed by Houston (19) and Dallas (18).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 8,741 verified decision-maker contacts tracked across these 2,009 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.