Nonprofit Mailing Services
Nonprofits qualify for the lowest USPS postage rates. We handle the permit paperwork, print the appeal, and prep the mailing — all in-house.
How Nonprofit Postage Rates Work
Cornerstone handles USPS nonprofit mailing end-to-end for organizations across the Hudson Valley — Form 3624 application support, authorization tracking, BMEU presort, and full campaign execution at the discounted nonprofit rate. Nonprofit mail is a USPS mail class that lets qualifying 501(c)(3), 501(c)(4), and similar organizations send Marketing Mail at significantly lower postage rates than commercial bulk mail. We've processed nonprofit mailings under permit since 1998 and know every step of the application and mailing process.
The savings add up fast on high-volume campaigns. We handle the permit application and every mailing after that — in-house design, print, and mail for Hudson Valley nonprofits, churches, civic organizations, and charitable foundations.
Why Non-Profit Rates Matter
Rates are approximate and vary by mail piece size, weight, and sortation level. Contact us for a precise quote.
PS Form 3624 Application
To mail at non-profit rates, your organization must submit USPS PS Form 3624 (Application to Mail at Nonprofit USPS Marketing Mail Prices) at the post office where you hold your mailing permit. The application requires documentation of your non-profit status, including articles of incorporation, IRS determination letters, and organizational bylaws.
Cornerstone Services provides a free interactive tool that walks you through the entire PS Form 3624 process step by step, collecting the information you need and helping you prepare a complete application package.
Use Our Free PS Form 3624 ToolFind Out If Your Organization Qualifies
We'll review your eligibility and help you apply for non-profit mailing rates.
Who Qualifies?
The USPS authorizes non-profit mailing rates for organizations that fall into specific categories. Common qualifying organizations in the Hudson Valley include:
How We Help
Eligibility Review
We review your organization's documentation to confirm you qualify for non-profit mailing rates under USPS guidelines.
Application Preparation
We prepare your PS Form 3624 application package with all required supporting documents — articles of incorporation, IRS determination letter, bylaws, and more.
Campaign Planning
We design your mailing strategy to maximize postage savings — choosing the right mail class, piece size, and sortation level for your budget.
Print & Mail
We handle graphic design, printing, CASS/DPV address processing, presort, and USPS delivery — all at your discounted non-profit rate.
Recent Campaigns
We've handled nonprofit mailing for organizations across the Hudson Valley and nationally. A few recent examples:
Daughters of the American Revolution
DAR needed to coordinate membership renewals and fundraising appeals at the USPS nonprofit rate. We managed the PS Form 3624 permit process, print, presort, and BMEU induction on their behalf.
nonprofit membership and fundraising mailing for DARWinant-Clayton Volunteers
The Winant-Clayton Volunteers program needed to reach US-based and UK-based donors for their annual fundraising appeal. We coordinated USPS outbound for domestic addresses and international mail handling for supporters in the United Kingdom.
international nonprofit mailing for the Winant-Clayton VolunteersNon-Profit Mailing FAQ
How long does the PS Form 3624 approval take?
USPS typically processes non-profit authorization requests within 30–60 days. We recommend applying well in advance of your first planned mailing.
Can we use our non-profit permit at any post office?
Your non-profit authorization is tied to the post office where your mailing permit is held. If you need to mail from multiple locations, additional authorizations may be required.
What's the minimum quantity for non-profit mail?
USPS Marketing Mail (including non-profit) requires a minimum of 200 pieces or 50 pounds per mailing. EDDM mailings require a minimum of 200 pieces per carrier route selected.
Does Cornerstone have its own mailing permit we can use?
Yes. If your organization doesn't have its own mailing permit, you can mail under our permit. We can also help you establish your own permit if preferred.
Sean is a USPS-certified Mailpiece Design Professional (MDP) with 25+ years of experience producing compliant direct mail campaigns for Hudson Valley businesses. He has processed over 2.3 million mail pieces through the USPS Business Mail Entry Unit in New Paltz, NY since 1998.
Find Out If Your Organization Qualifies
We'll review your eligibility and help you apply for non-profit mailing rates.
Service Areas
We serve businesses and organizations across three Hudson Valley counties.
Non-Profit Mailing Guides
In-depth guides on non-profit postage rates, qualifying for bulk mail authorization, donor acquisition by mail, writing fundraising letters, and EDDM vs. targeted mail for nonprofits — written by Sean Griffin, MDP, owner of Cornerstone Services since 1998.
Annual Fund Direct Mail Strategy: How to Structure a Year of Nonprofit Mail
A single year-end appeal is not a direct mail program. Here's how to structure an annual fund direct mail calendar that renews donors, upgrades gift amounts, and acquires new donors — from a mail house that has served Hudson Valley nonprofits for 28 years.
EDDM vs. Targeted Mail for Nonprofits: Which Is Right for Your Campaign?
Nonprofits can use EDDM to reach every household in their service area, or targeted mail to reach specific donor profiles. Here's when each approach makes sense — with real cost comparisons for Hudson Valley organizations.
How to Qualify for Nonprofit Bulk Mail: A Step-by-Step Guide
Qualifying for USPS nonprofit bulk mail rates requires a separate authorization from your IRS tax status. Here's the complete process — who qualifies, what documentation you need, and how to apply.
Nonprofit Donor Acquisition by Mail: How to Find New Donors With Direct Mail
Acquiring new donors by mail is more expensive than renewing existing ones, but it's how organizations grow. Here's the list strategy, offer structure, and cost expectations for nonprofit acquisition mail in the Hudson Valley.
Nonprofit Postage Rates: What the USPS Nonprofit Rate Actually Costs in 2025
Qualified nonprofits can mail at significantly reduced USPS postage rates — but the authorization process, eligibility requirements, and rate structure are not simple. Here's what the nonprofit postage rate actually is and how to qualify.
Writing Nonprofit Fundraising Letters That Actually Get Donations
Most nonprofit fundraising letters fail because they lead with the organization, not the donor. Here's the structure, language, and ask strategy that produces real results — with examples from Hudson Valley campaigns.
Ready to Save on Your Non-Profit Mailings?
Get a free estimate and find out how much your organization can save with non-profit postage rates.