Being the world's most complete online collection of direct mail samples, sales letters, postcards and flyers, Who’s Mailing What! is the go-to resource for direct marketers, copywriters, designers, printers and everyone involved in direct mail marketing. WMW! provides information on hundreds of thousands of direct mail packages and promotional emails from across U.S. markets since 1978.

• Service providers seeking leads — WMW! is a lead source to assist you in acquiring new customers. You can receive real-time notification of new mailers added to the database allowing you to pitch your services to known and active mailers.
• Direct marketers researching the competition — simply type the name of the competitor into the search box and see the mail campaigns that were sent on behalf of this company.
• Creative people seeking inspiration — WMW! opens up a new world for those searching for new ideas and success stories in order to boost their own marketing efforts.

There are more than 300,000 emails stored in our archives. As we are now focused on collecting direct mail pieces, the email collection is not being updated regularly. However, we always listen to our clients — so if you want us to keep growing the email collection, please let us know!

We are not responsible for the way you use the copies received via our service. As such, legality relies fully upon how you plan to use these materials. All rights to the mail piece belong to the originating company and are protected by copyright law. Our goal is to provide you with an inspiration source to help you create your unique mail campaigns and boost your own marketing efforts.

Ask WMW Chat is our AI-powered search assistant that lets you explore the entire Who's Mailing What! database using natural language — no filters or dropdowns required. Just ask a question the way you'd ask a colleague ("Show me financial services offers that use urgency-driven copy") and Ask WMW Chat finds the relevant campaigns for you.

You can search by industry, company, mail format, offer type, audience, design style, messaging themes, and more. Ask WMW also compares campaigns side by side in clear summaries and tables, keeps context so you can ask follow-up questions in a natural back-and-forth, and lets you save conversations to your account to revisit anytime.

Ask WMW Chat is currently available in beta to all Who's Mailing What! members. Stay tuned for new Ask WMW Chat features!

These are mail pieces that have been used repetitively with success.

These are direct mail campaigns that have been used for years with great success.

We applied machine learning and modern analysis to mine the data and built a platform that provides insight that marketers can use to improve copy and design, increasing direct mail ROI. The number of mail pieces added annually to the database has increased by 13 times compared to previous years. And thanks to an optical recognition algorithm, full-text search has been implemented, a feature that lets members easily find mail that matches their keywords.

We have some exciting features on our roadmap, all designed to help you find, analyze, and act on direct mail intelligence faster.

AI-Powered Search & Insights

We're bringing AI directly into Who's Mailing What! so you can go beyond keywords:

• Smarter, natural-language search
• Extrapolated mail volume projections by business and industry
• Built-in data analysis and comparison tools

API Access

Connect Who's Mailing What! to your own systems with a new API for external searches and database access across platforms.

An Expanded Library

More control over your saved work:

• Shared credit pool for organizations and credit usage history
• Folders in your library to keep your saved creatives organized

Stay tuned for these and many other exciting features!

WMW! covers 21 categories that are divided into more than 90+ subcategories for your convenience.

The WMW! Collection provides you access to a full spectrum of verticals in both Business-to-Consumer and Business-to-Business categories. We feature campaigns across many industries to help showcase insights into effectively selling products and services. Please see the full list of categories and subcategories here.

All the mail pieces are in PDF format. You can easily access them via our built-in PDF viewer, as well as download files for future use.

We receive daily updates and post weekly to allow us to extract more insights for you and ensure data quality.

Now WMW! has more than 398,000 mail pieces in its database and this number continues to grow weekly.

Currently we have 49,473 mailers. New mailers are identified on a weekly basis.

We have an extensive history of working with a large number of panelists from across the U.S. who contribute mail pieces to our Collection. In the last 6 months, we have worked with an average of about 400 panelists.

Our Google-like full-text search capability uses layered filtering to show you precisely what you want to see in seconds. You can zero-in on specific keywords or use our intuitive filters to return robust and targeted search results. And with Ask WMW Chat, our new AI-powered assistant, you can skip the filters entirely—just ask a question in plain language, and instantly get the relevant campaigns, side-by-side comparisons, and creative insights you're looking for.

Yes, we welcome new contributors! Please get in touch with us and we’ll provide you with more details.

The service that will connect the 1.2 terabytes of WhosMailingWhat! data with our own dataset of 1.4 billion U.S. consumer characteristics to help you send the right creative to the right person.

We leverage AI-powered solutions to analyze your customer file and segment your audience according to their preferences.

Yes, non-profit organizations qualify for special pricing. Please contact us and we’ll share more details.

You can view some of our more popular plans here. Our pricing is not one size fits all, so we need to get an idea of how you'll be using the system, which industries you are serving, who else from your company will need access to the service, along with a few other things. Once we understand your needs, we can build you a custom-tailored plan. Please contact us and we can provide you with a quote based upon your needs.