Reverse Shrinking Donor Files with Acquisition Surround Sound: How New Channels Mean New Donors 

Last year, nonprofits raised more money than they had in five years. They also had fewer donors than they’ve had in five years. Both are true, and together they send a worrisome signal.  

The growth came from a shrinking group of donors giving more while the base of smaller donors has evaporated. In our own 2025 Benchmark Report, new donors dropped 14%, active donor files shrank 10%, and retention fell to a recorded low. Acquisition gets more expensive every year, and the kind of person who gives is changing. Nonprofits are raising more from fewer donors, it’s been that way for at least two decades, and that trend is expected to continue.  

The good news: you have tools to address the problem. But it starts with a unified solution rather than investing in individual channels.  

Why Donor Acquisition Keeps Getting Harder and More Expensive 

Acquisition is the hardest thing most nonprofits do, and every year it gets more expensive. 

Start with postage. From 2020 to 2025, nonprofit letter rates rose 44% and nonprofit flats rose 150%. The average cost of postage is expected to double in a single decade. The USPS is the only institution that can deliver letters, but routine rate increases have priced a lot of acquisition mail out of the budget. 

Then there’s the hidden cost you didn’t realize was a problem until you’ve paid for the same person’s data twice. Say you use direct mail and digital as separate channel programs, through separate vendors. If you hire two organizations to find prospects you could pay for the same prospect twice without realizing it. When each channel is modeled in a vacuum, neither sees the donor who reads your mail and gives through your website. Add in prospecting black boxes like Meta and it may be three or more times over 
 
It’s a structure problem that results in your outreach budget fighting itself. Acquisition is organized by channel; your donors are not. 

Your Best New Donors Are Invisible to Any Single Channel 

The data shows that single-channel acquisition is not a reliable means of reaching today’s audiences.                                                                                                                                                                                                                                                                                                                          

Take one organization’s mail acquisition, sorted by responder age. By revenue per thousand pieces, the young donors are underwhelming: An average of $17 for ages 18-29 versus $122 for those 70-79. If that data were all you had, you’d stop mailing anyone who can’t remember rotary phones and focus on retirees. 

Now watch this: Match those same mailings against the online gifts that came in within thirty days. The picture flips. The acquisition mail raised awareness but was not the method young people used to respond. The online gifts came in because of the mail, but not through the mail. Everyone under 60 is more likely to give online because of mail than to send a reply through the mail.  

Read the results by channel and the ROI looks terrible. Read them as people and your younger audience are the donors you can least afford to skip. That gap is widening. The age where mail-prompted giving splits between online and offline used to be age 50. Now, it’s about 65. 

That’s the problem with relying on any single acquisition method or even a multichannel effort that doesn’t communicate. A single channel doesn’t tell you about your donors. It shows you which ones respond to a particular effort and ignores the rest. The bigger issue, as we can see above, gives a misleading impression about what is actually working and how you should grow your acquisition efforts.  

Start With the Donor, Not the Channel 

We’ve identified the problem. The solution is simple: Flip the order of operations.  

Traditional acquisition starts with a channel. You decide to grow mail, so you buy a mail list. You decide to grow email, so you buy an email audience. The channel you pick decides which people you get, and anyone who engages across channels falls through the cracks. 

Start with the donor instead. Find the specific people most likely to give to you, based on their established gifting behavior, and then decide how to reach each one. The channel becomes the delivery format, not the foundation for targeting. When you stop buying channels and start finding people, you stop paying twice for the same prospect, and you put your efforts toward the donors most likely to say yes instead of spreading it evenly across lists that overlap. 

That style of approach has a name. 

What Is Omnichannel Donor Acquisition? 

Omnichannel donor acquisition is a way of finding new donors that starts with the person, not the channel. Instead of buying separate prospect lists for mail, digital, and text, you build one modeled audience of high-value prospects, based on their real giving behavior. You then reach the highest value of those people across every channel they respond to: mail, email, text, and even digital, CTV, and social. 

A key distinction is that this is not multichannel;, it is omnichannel. Running mail and email at the same time is multichannel: several channels, several plans, no coordination. Omnichannel is one audience, coordinated across channels, because it is built around people who are reachable in several places. Multichannel is about your channels. Omnichannel is about your donors. 

That’s what we built SimioCloud Omnichannel Acquisition for. It merges capabilities the rest of the sector keeps in separate boxes. Cooperative audience modeling, email acquisition, and text-ready appends all flow from one nonprofit-only source. You select one audience, pay for it once, then activate it everywhere. 

How It Works: One Audience, Every Channel 

Data is the name of the game. SimioCloud is the largest donor intelligence system in the world, and it runs on real giving behavior, not inferred interests or demographics. The model weighs how more than 137 million donors making over 2.3 billion donations actually behave, then ranks which people are most likely to give to an organization like yours across every channel they can be reached on. 

What you get is an audience: specific, high-value prospects and the contact points to reach them, ready to activate across mail, email, and text, and more. Our team coordinates that activation with you, so the same audience shows up wherever your donors respond, and extends into CTV, display, and social through our media services when you’re ready to expand. 

This does two things channel-by-channel acquisition can’t. First, you concentrate on the best prospects instead of spreading yourself thin: you’re ranking individual people, not filling channel quotas. Second, you reach the donors single-channel models never see: the younger supporters you reach with one channel who give with another.  

Best of all, it integrates with the tools you already use, such as Moore CRM, Salesforce, Raiser’s Edge, EveryAction, and Engaging Networks. And the cooperative data is constantly updating, so you’re building on how people give today, not how they gave last quarter. 

Does It Work? What the 2025 Data Shows 

The omnichannel approach is new to the stage, but our modeling and previous examples already demonstrate its efficacy. Organizations that model an audience and activate it across channels have seen stronger results. 

In 2025 we performed tests with ten organizations new to our current-generation models, 9-of-10 saw double-digit gains in revenue per piece, running as high as 59%. Better modeling also means you can go deeper into an acquisition file and still find donors worth mailing. 

The biggest takeaway is coordinated campaigns. Likewise, Covenant House ran an every-channel campaign that cut the cost to acquire a monthly donor by 47%, on 8% less media spend. Dare to Care Food Bank answered an emergency with a full digital response and brought in more than 2,000 new or reactivated donors. 

Each channel proves itself, but the effect multiplies when they run together. In our initial case studies, running mail and CTV together improved response rates by 11% while cutting cost to acquire by 39%. Pair mail with display and the response rate rose 93%.  Add CTV to email and the conversion rate multiplied by 19.6x. Each of these paired channels improved performance when compared against their single channel counterparts.  

 
Omnichannel acquisition is what happens when you stop making each channel prove itself separately. A rising tide lifts all boats.  

How to Start Without Betting the Budget 

You don’t have to take our word for this. You can prove it with your own file. 

Run the modeled audience against a comparable set you acquire your usual way, in the same campaign, and compare them head-to-head. You’ll see the lift on your own file before you scale, instead of betting the program on a hunch. 

Start small and scale what works. Your next best donors are already out there giving to causes like yours. The only question is whether your acquisition is built to find them or built around channels that keep missing them. 

See the donors you’ve been missing. Request a demo today!