For years, our sector acted like email was a clear hallway: hit “send,” it lands, it gets opened, it earns its keep.  But today it’s really  fog.

Nonprofits still talk about deliverability like it’s 2009: “Did it send?” “Did it bounce?” “Did it technically arrive?” But deliverability isn’t the problem. See-ability is: Did a real donor actually see it—or was it quietly shunted into Promotions, clipped, throttled, buried, or treated like a suspicious package left on a bus seat?

Because here’s the truth: Your email was delivered. But no one saw it.

Open Rates Are a Mirage. Stop Steering By Them.

Open Rates used to be a crude compass. Now they’re often a hallucination.

Apple’s Mail Privacy Protection preloads images and hides IP addresses in the background—not when someone opens the email, but when it arrives—specifically to prevent senders from tracking when and how recipients view messages. Meanwhile, Gmail, Yahoo, and Outlook have tightened their rules: fail the authentication sniff test or rack up too many complaints, and your message lands in Promotions, spam, or gets throttled into oblivion.

So if your board report still leads with Open Rate, you’re measuring fog. And the fog was 37%.

The Math Is Getting Worse

Email fundraising efficiency, based on M+R benchmarks,  is in free fall:

• 2022: $90 raised per 1,000 fundraising emails
• 2023: $76 per 1,000
• 2024: $58 per 1,000
• It took an estimated 1,700 emails to get a single gift in 2024

That’s not weak copy. That’s a system turning on itself.

Meanwhile, “Dead” Direct Mail Still Delivers

“Direct mail is dead” is what people say before they look at their own numbers.

Direct mail to house lists has an average 161% ROI, compared to 44% for email (per the ANA Response Rate Report). Sure, postal mail is more expensive to send. But unlike email, it arrives where people live.  Email hasn’t failed you—yet. But the ground beneath it has shifted. The inbox is no longer neutral space. It’s a battleground of algorithms, privacy filters, and automated suspicion.

What To Do?  Fix the Fundamentals

Understanding these acronyms isn’t optional anymore—they’re your passport to the inbox:

• SPF (Sender Policy Framework): says which servers can send email from your domain
• DKIM (DomainKeys Identified Mail): cryptographic proof the message wasn’t tampered with
• DMARC (Domain-based Message Authentication, Reporting, and Conformance): ties SPF + DKIM together, enforces alignment, and tells inboxes how to treat failures

If any of these are misconfigured or missing, you’re halfway to the spam filter before you hit “Send.” Learn this alphabet, then fix what’s broken—or have your IT folks check under the hood.

5 Checks That Determine Whether You’re Seen—Or Silenced

1) Authenticate Like You Mean It

SPF. DKIM. DMARC. Check them. Align them. Enforce them. And make sure every platform you use to send is properly authenticated—not just your main Email Service Provider.

2) Watch Your Spam Rate Like a Heart Monitor

Google says keep complaints below 0.1%. Yahoo gives you a hard stop at 0.3%. Anything higher and you’re not just filtered—you’re flagged.

Apple doesn’t spell out a number, so assume the practical threshold for maintaining good reputation across all major providers is:

• < 0.1% complaint rate = healthy
• >0.1%–0.3% = warning zone
• > 0.3% = high risk of filtering or deliverability damage

3) Make Unsubscribing Easy—Or Pay the Price

One-click unsubscribe is no longer a nice-to-have. It’s the difference between “goodbye” and “go to spam.” Make it obvious and instant, or get throttled.

4) Warm Up, Don’t Blow Up

New domain? Don’t blast a huge quantity with your first mailing. Start small. Send to your most engaged supporters. Ramp up gradually. Treat trust as something earned—not presumed.

5) Respect the Plumbing You’re Using

Outlook.com and Microsoft 365 have hard sending limits. If you’re using a personal or workplace email account for bulk sends… stop. Use a real email platform built for scale, or suffer the silent throttling of amateur hour.

Your New Metrics: Ditch “Opens.” Follow the Money.

Open Rates lie. Clicks, conversions, and revenue per 1,000 delivered don’t.  Measure:

• Click → donation page → gift
• Revenue per 1,000 delivered
• Complaint and unsubscribe rates
• Inbox placement over time
• And—if you’re brave—run holdout tests to prove what email causes, not just what it accompanies

What is “Inbox Placement Over Time”?

This refers to where your email ends up—not just whether it was “delivered,” but whether it landed in the primary inbox, the Promotions tab, spam, or vanished into a void.

Tracking inbox placement over time helps you spot:

• A gradual decline in visibility (e.g., more mail routed to Promotions)
• The impact of a domain or IP change
• Whether a spike in complaints or a poor campaign damaged your reputation

How to track it: Use tools like Google Postmaster Tools, Yahoo Sender Hub, or commercial options (Validity, Inbox Monster, GlockApps) to monitor trends. Test using seed lists—accounts you control across Gmail, Yahoo, Outlook, etc., to see where your emails go. Look for patterns: Did you start hitting Promotions right after a new vendor or bad send? Did one segment trigger more spam placement?

What Is a “Holdout Test”?

A simple but powerful technique to prove whether your email (or any channel) is actually causing results. Instead of emailing everyone on your list, you:

• Hold out a small, random subset—say, 10%—who receive nothing
• Measure what percentage of that group donates during the campaign window
• Compare that to the percentage who did get the email

Why it matters:

• Proves incrementality: did the email cause the gift, or would it have happened anyway?
• Stops you from over-crediting email when it was just “present,” not persuasive
• Especially valuable for multi-touch programs (mail + email + SMS + ads) where attribution gets muddy

For a campaign that claims $25K raised from email, a holdout test might show only $12K was actually caused by the send. That changes how you budget—and how you write. (For more in-depth discussion of attribution and testing to arrive at accurate attribution, see Kevin’s post here.)

Rebuild Trust, Restore Visibility

The inbox is no longer neutral space. It’s a battleground of algorithms, privacy filters, and automated suspicion.  So rebuild your organization’s trust factor, respect the gatekeepers, treat email visibility like the scarce resource it’s become.

And for the love of ROI, stop pretending postal direct mail is dead. It’s not. It’s standing at your front door holding a check.

Roger