Stewardship makes the case.
Custodia gives you the rails to fund it.
Land trusts, watershed groups, and conservatories already know how to tend a place. The hard part is paying for it. Custodia turns the field journal you're already keeping into a story sponsors can join — monthly sponsorships of specific preserves, threshold campaigns tied to real ecological signals, and a printed Annual Almanac drawn from the year's letters from the land.
No setup fee. Stripe Connect handles payouts directly to your organization. Custodia keeps a 5% platform fee on funds raised through these rails — that's it.
Sponsor-a-Preserve
Recurring monthly sponsorships tied to specific places. Sponsors pick a tier, see the preserve they're tending, and receive the seasonal letter the land sends.
Threshold campaigns
When a real ecological threshold is crossed — baseflow, canopy gap, a returning species — open an appeal that's grounded in monitoring data, not abstract urgency.
Annual Almanac
A hand-bound print volume drawn from this year's Wonder Letters. We print on demand and ship to the door. The book is the gift; the gift is the funding.
Watercolor Posters
Free poster templates for every workday, walk, and threshold campaign. Upload a snapshot of your preserve and we paint it as watercolor — even cell-phone photos look field-journal-ready.
Wonder Prints
Turn a single field photo into a sellable 12×18, 18×24, or 24×36 art print — paired with a paragraph of NRI interpretation. Printful prints and ships on demand; you set the price and keep the margin.
Memberships for a place, not an organization.
People give to organizations they trust. They commit to places they love. Sponsor-a-Preserve lets you publish a public page for every site you steward — Willow Creek, Heron Bend, Sedge Flats — with sponsorship tiers you set yourself.
- Three or four monthly tiers per preserve, your prices, your perks
- A public page per site at custodia.app/sponsor/…, easy to share
- Stripe Connect subscription — payouts go straight to your bank
- Sponsor list, MRR, and lifecycle tracked in your Fundraising dashboard
- Anonymous gifts honored if the sponsor prefers
A seasonal letter from the preserve.
Letters + your name in the Annual Almanac.
Letters, Almanac, plus a workday invitation each season.
You set the names, prices, and perks per preserve.
Help us monitor the creek through the dry season.
Baseflow at the Willow Creek gauge crossed our drought threshold last week. We're adding a second telemetry station and three additional monthly walk-the-creek visits through October.
Appeals grounded in what's actually happening.
Custodia already watches the signals — baseflow, canopy gap, returning species, fire risk, monitoring gaps. When a threshold you set is crossed, the platform offers to open a campaign tied to it. Donors see the same chart you see. The story is true because the data is.
- Tied to a real Threshold inside the app — no abstract appeals
- Shareable public page with progress bar and one-tap giving
- Campaign auto-marks 'reached' when the goal is met
- Every gift rolls into the Reciprocity ledger — donors are part of the story
- Or open one when nearby review activity threatens the place — see Review Watch below
When something is being proposed near a preserve.
Donors don't only give to celebrate the land — they give to defend it. Custodia's Review Watch surfaces nearby permits, hearings, and comment windows alongside migration windows, habitat sensitivity, and your stewardship memory. When something matters, you can open a focused appeal with the same trustworthy detail your members already expect from you.
- Project, distance, and comment deadline shown plainly
- Migration overlay so seasonal stakes are visible
- Stewardship memory pulled into the donor story automatically
- Appeal funds a real response — comments, monitoring, legal review
Help us comment on the transmission re-route near Willow Creek.
The proposed corridor runs 2.4 miles from our preserve and crosses an active spring migration window for cerulean warbler. We're preparing formal comments, two field visits, and a habitat-impact review with our consulting biologist.
A book the year wrote, printed and mailed.
Every season Custodia helps stewards send a Wonder Letter — the letter the land would have written, composed from the year's signals. At the end of the year, those letters become a hand-bound paperback: the Annual Almanac. We build the print-ready PDF, hand it to Lulu's print-on-demand network, and ship it to the sponsor's door.
- Composed automatically from your year's Wonder Letters and almanac entries
- 6×9 perfect-bound, printed on demand by Lulu — no inventory, no risk
- Sponsors order at custodia.app/almanac/[your-org]; you see every order
- Doubles as a thank-you gift for major donors and board members
Beautiful posters, made from your photos.
Every campaign needs a flyer for the coffee shop, the community board, the trailhead kiosk. Custodia ships ten ready-to-print templates — volunteer days, restoration mornings, threshold appeals — and a built-in watercolor stylizer. Upload the snapshot you took on a walk and Custodia paints it for you. No graphic designer required.
- Ten templates: workdays, walks, threshold campaigns, gatherings
- Type your details — preview updates live, print or save as PDF
- Upload your own photo and stylize it as watercolor in one click
- Free for any organization, signed in or not
Honest about the cut.
Custodia keeps a small platform fee on funds raised through these rails — that's how we pay for the engineering, hosting, and the print pipeline. Everything else flows to your organization.
The 5% platform fee applies only to gifts that flow through Custodia's checkout. Existing donations you process elsewhere aren't touched.
Built for the organizations we work with.
Land trusts
Sponsorships per preserve. Threshold campaigns when monitoring catches something worth funding. Year-end Almanac as a major-donor gift.
Watershed councils
Tie campaigns to real baseflow and water-quality signals. Sponsor-a-reach memberships for repeat supporters.
Conservatories & arboreta
Sponsor-a-grove memberships. Almanacs as members-only annual gifts. Threshold campaigns for capital projects.
Habitat restoration teams
Project-based threshold campaigns. Field journal becomes the donor newsletter automatically.
The work funds itself when the work is visible.
Sign up, connect your payouts in five minutes via Stripe Connect, and publish your first preserve sponsorship page the same day.