Writing Nonprofit Fundraising Letters That Actually Get Donations

The fundraising letter is the backbone of direct mail fundraising for nonprofits. It has been for over 60 years, and it remains so despite email, social media, and digital campaigns. The reason: a well-written letter delivered to the right donor list still produces higher response rates and larger average gifts than most digital channels for established nonprofit brands.

But most fundraising letters underperform not because direct mail doesn’t work, but because the letter itself was written by committee, approved by a board, and structured around what the organization wants to say rather than what the donor needs to feel before writing a check.

In 28 years of printing and mailing for nonprofits across the Hudson Valley, I’ve seen the difference between a fundraising letter that generates a 5–8% response rate and one that generates a 1–2% response rate. It’s almost never the paper stock or the mailing list. It’s the letter.

The Structure That Works

Decades of fundraising research — beginning with Siegfried Vögele’s door-opener studies in the 1980s and confirmed by test after test — has produced a fairly consistent structure for what effective fundraising letters do:

1. Lead With a Specific Story, Not a Summary

The most common fundraising letter opens like this: “For over 20 years, [Organization] has been serving the community by providing food, clothing, and shelter to those in need. Thanks to the generosity of donors like you, we have served thousands of families and helped change lives.”

That letter is not wrong. It’s just not compelling. It opens with the organization, not the donor, and not a person.

The better opening: “Maria arrived at our food pantry on a Tuesday afternoon in January with three children and an empty bag. She had driven 40 minutes from Ellenville because she was embarrassed to go to a pantry in her own town. When she left, that bag weighed 32 pounds.”

One person, one moment, one specific detail. The reader is with Maria before they’re thinking about their checkbook.

The story should:

• Feature one person, not a category of people
• Include a specific, sensory detail (the 32-pound bag, not “a full bag”)
• Create a moment of tension before the resolution
• Resolve with the donor’s gift as the hero — not the organization

2. Bridge From Story to Ask

After the opening story, the letter transitions from the individual to the larger picture: “Maria is one of 847 families we served last year from across Ulster and Dutchess Counties. And right now, heading into winter, we are running 18% below our fundraising goal for the year.”

This transition does two things: it shows the individual’s story is not an anomaly (there are hundreds of Marias), and it introduces the problem the donor can solve.

3. Make a Specific, Anchored Ask

The ask should come no later than the second page, and it should be specific:

“Will you make a gift of $50 today? For $50, you provide emergency food for a family of four for an entire week. That’s 21 meals — breakfast, lunch, and dinner for parents and kids who, without your help, might not eat today.”

Then offer a ladder: “If $50 is more than you can give right now, $25 makes a real difference — it covers two days of meals for that family. And if you can give $100 or $150, you become one of the donors who makes it possible for us to serve everyone who walks through our door.”

The ask ladder (three specific amounts with impact descriptions) consistently outperforms a single ask amount or an open-ended “whatever you can give.”

4. Create Urgency Without Manufactured Desperation

A deadline creates urgency. A matching gift challenge creates urgency. A specific program that needs funding by a specific date creates urgency. These are legitimate and should be used when they’re real.

What doesn’t work: artificial urgency (“We desperately need your help now!”) without any specific deadline or reason. Donors who have given before recognize this as boilerplate and discount it.

Real urgency: “Our matching gift challenge ends December 31 — gifts received by then are doubled. After January 1, the matching funds disappear.”

5. The Reply Card and PS

The reply card should restate the key offer, include the specific ask amounts, and make it easy to return. Include a pre-addressed return envelope.

The PS is the second most-read element in any letter — readers skim, and the eye goes to the opening, then the PS, before deciding whether to read the body. Use it to restate the ask and deadline, not to thank the reader for reading.

What Not to Do

Don’t open with “Dear Friend.” Personalizing with the donor’s name — even in bulk mail — outperforms generic salutations.

Don’t write in passive voice. “Lives have been changed” is weaker than “You changed a life.”

Don’t bury the ask. Donors who are moved by the story and willing to give should encounter the ask before they’ve finished the first page, not at the end of page two.

Don’t use institutional language. “We leverage our strategic partnerships to maximize programmatic impact” has never inspired a single donation. Write at a 6th–8th grade reading level. Every sentence should be something you’d actually say out loud.

Don’t omit the phone number. Some donors want to call. Your letter should include a phone number.

Working the Letter Into a Campaign

A single fundraising letter is a data point. A multi-touch campaign — letter, 10-day follow-up card, phone call for major donors — produces better results than any single piece.

At Cornerstone, we print and mail fundraising letters for nonprofits throughout the Hudson Valley on nonprofit authorized postage. We can coordinate the full print-to-mail sequence: letter package (letter + reply card + return envelope), outer envelope addressing, presort, and USPS drop.

For the letter content itself, we work with organizations to review structure and make production recommendations. We don’t write copy for hire, but we’ve seen enough letters to know what structure works.

Testing Letter Elements: What to Measure

Testing is the discipline that separates fundraising programs that improve over time from those that plateau. The simplest tests to run on fundraising letters:

Ask amount test: Split your file in half. Send one half a letter with a $35/$50/$75 ask ladder; send the other half a letter with a $50/$75/$100 ladder. Measure total revenue per segment, not just average gift — a lower ladder may produce more total revenue through a higher response rate.

Opening story test: Test two different opening stories with the same ask. Track which story produces higher response. Over time, you’ll develop a library of story types (client success stories, volunteer stories, community impact stories) and know which type resonates best with your donor base.

Deadline test: Test a letter with a specific deadline (“Your gift must arrive by April 30 to be included in our spring matching fund”) against one without. Deadlines almost always improve response, but the magnitude varies — test it.

The Physical Package: What Surrounds the Letter

The letter is the centerpiece, but the package it arrives in affects whether it gets opened:

Outer envelope: Use a plain white #10 envelope with a teaser line (short text on the outside that compels the recipient to open). Effective teasers: “Your gift has been matched” or “Inside: a message from Maria.” Over-designed, full-color envelopes often underperform plain envelopes with a simple teaser — they look like advertising, which many recipients discard.

Reply card: The reply card should restate the ask amounts with impact descriptions, include a “Make my gift $ ___” open field for donors who want to give a different amount, and provide a check box for credit card gifts with fields for card information. Always include a “Please contact me about planned giving” checkbox — it costs nothing and generates major gift pipeline leads.

Return envelope: Always include a pre-addressed return envelope. Business reply envelopes (postage-paid by you) increase response by 10–15% over envelopes requiring a stamp, but they carry a per-piece return postage cost. For organizations with tight budgets, a non-postage-paid return envelope still significantly outperforms no return envelope.

Lift note: A small additional piece — a 3x5 note card from the board chair, a client, or a volunteer — that adds a second voice to the appeal. Lift notes consistently increase response rates by 5–10% in testing. They are most effective when they come from someone other than the signer of the main letter.

Personalization: The Variable Data Advantage

The difference between a letter addressed to “Dear Friend” and a letter addressed to “Dear Margaret” is measurable — personalized salutations typically increase response rates by 15–25% over generic salutations.

Beyond the salutation, effective personalization includes:

Last gift acknowledgment: “Your generous gift of $75 last March helped us serve 23 more families.” This validates the donor’s previous contribution and creates a specific reference point for the current ask.

Suggested upgrade: “This year, would you consider increasing your gift to $100?” Calculating a modest upgrade from the donor’s last gift amount — typically 15–30% higher — and printing it as a personalized suggestion is one of the most reliable techniques for increasing average gift size.

Cumulative impact: “Over the past three years, your total giving of $225 has provided 450 meals for families in Ulster County.” Cumulative giving statements reinforce the donor’s importance to the organization and create a sense of ongoing partnership.

Variable data printing — where each letter is personalized with the donor’s name, address, giving history, and suggested ask amounts — is standard on Cornerstone’s digital printing equipment. We merge your donor database with the letter template during production, producing a fully personalized letter for each recipient without manual intervention.

To discuss your nonprofit mailing program, call (845) 255-5722 or contact us online.