Constant Contact and Substack help you send emails, but they charge fees that eat into your fundraising budget. Zeffy gives you email tools plus donation forms, event ticketing, and donor management — all with zero fees so every dollar stays with your mission.
Zeffy is trusted by 50,000+ nonprofits
Constant Contact VS Substack
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Keep 100% of donations while building stronger donor relationships through integrated email outreach
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Constant Contact charges $8.40+ monthly and Substack takes 10% of subscriptions. Zeffy charges zero fees, so your email campaigns actually drive donations to your mission instead of platform profits.
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Constant Contact only handles emails while Substack just does newsletters. Zeffy combines email outreach with donation forms, event ticketing, and donor management in one free platform.
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Constant Contact and Substack require donors to click through to separate payment systems. Zeffy lets supporters give directly through QR codes, tap-to-pay, and mobile-optimized forms that work on any device.
Yes! While Constant Contact charges monthly fees starting at $8.40 and Substack takes 10% of your revenue, Zeffy is completely free. Donors have the option to leave a voluntary contribution to support our platform.
Email platforms like Constant Contact and Substack only handle newsletters. Zeffy gives you newsletters plus donation processing, event ticketing, and donor management - everything your nonprofit needs in one free platform.
Zeffy offers 100% free fundraising tools plus email marketing, while Constant Contact charges monthly fees starting at $8.40 with no donation processing. With Zeffy, you get newsletters AND fundraising in one platform at zero cost.
Unlike Substack's 10% platform cut, Zeffy is completely free for nonprofits. Plus, you get donation tools, event ticketing, and fundraising features that Substack doesn't offer - all in one place.
Yes! While Constant Contact and Substack focus only on emails, Zeffy combines newsletters with donation processing, event ticketing, peer-to-peer campaigns, and donor management - all at zero cost to your nonprofit.
Zeffy is the fundraising platform that cuts out the fees, clears up your tech mess, and puts your cause first — so your team, even if you're a small team wearing many hats or a one-person show, can focus on what really matters.
No platform fees. No processing fees. No catch. We know it sounds too good to be true, but it's not. Every penny goes straight to your mission, while competitors take 2-3% off every donation.

Stop bouncing between MailChimp, Eventbrite, and all those spreadsheets. Now you can handle donations, ticket sales, memberships, raffles, and all your donor info in one spot.
Built for teams like yours — whether you're volunteer-led or have limited staff. Set up donation forms, sell tickets, and launch campaigns without needing a tech wizard. It's super easy, and you'll be up and running in minutes.


From QR codes on flyers to Tap-to-Pay on a phone, Zeffy makes it easy to accept donations on the go. Mobile-optimized and offline-ready, so no donor slips through the cracks.
Centralize supporter relationships, automate thank-you messages, and preserve institutional knowledge when board members rotate out.

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As a startup nonprofit with only two members, and no funding (yet) we’d need something with low (or no) fees. Zeffy was a dream come true.
Masey, Loose Ends.
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