Earth Day isn't just a feel-good moment on the calendar anymore. It's become one of the most important days of the year for brands that walk the sustainability walk — and a real opportunity to deepen relationships with eco-conscious customers through email and SMS.
The brands that do it best aren't just slapping a green banner on their homepage and calling it a day. They're building thoughtful, multi-touch digital campaigns that reflect their values, reward their subscribers, and drive real results.
Here's how some of our favorite sustainable brands are showing up in inboxes this April 22nd.
Earth Day isn’t a typical sales holiday. But that doesn't mean promotions don't belong. The brands that do it well tie their discount directly to their mission, so the sale feels like part of the cause, not a contradiction of it.
Take plant-based cleaning brand Branch Basics. Every Earth Month, they send subscribers a sitewide promo code (their recurring "EARTHDAY20" code has become something of an annual tradition) for 20% off Starter Kits — the same kits designed to replace an entire cabinet of toxic, single-use plastic cleaners. The offer isn't just a discount. It's an invitation to make a lasting change. One concentrate. One kit. Less waste. That's a message that writes itself.
The takeaway: If your product is the solution to an environmental problem, Earth Day is your Super Bowl. Say it loud, make it easy to act on, and give subscribers a reason to finally make the switch.
The smartest sustainable brands don't limit themselves to a single send on April 22nd. They treat the entire month of April as a runway — building anticipation, layering in education, and closing strong with urgency.
Start with your "why" in early April. Follow with product education mid-month. Then hit subscribers with a deadline-driven reminder as April 22nd approaches.
A multi-email sequence might look like: an Earth Month kickoff featuring your sustainability story → a mid-month email spotlighting your most eco-friendly product or initiative → an Earth Day send with a clear CTA and deadline. SMS works perfectly for that final push.
Here's where Earth Day marketing gets genuinely interesting (and genuinely risky). Consumers are quick to smell inauthenticity. A hollow "we love the planet!" email with a 15% off coupon stapled to it isn't going to cut it anymore. People see right through “fake.”
The brands that stand out use Earth Day to show, not just tell.
Denim brand Mud Jeans takes this seriously. Rather than running a traditional sale, they launched a platform called "Voices for Good" on Earth Day — using their email list to amplify the environmental and social initiatives of their own customers. Their message: our jeans may not save the world, but the people who wear them can. They also give every single employee a paid day off on Earth Day to volunteer for a cause of their choosing. That's the kind of thing you put in an email. A “humble brag.”
The takeaway: Your Earth Day email doesn't have to sell anything. Sometimes the most powerful send is the one that shows your subscribers who you really are.
Vague sustainability claims are out. Specific, verifiable impact data is in — and it makes for surprisingly compelling email content.
Mud Jeans, for example, publishes detailed lifecycle analyses showing that each pair of jeans saves 87% water and 89% CO₂ compared to conventional denim production. Pair a number like that with a simple CTA — "Send your old jeans back, we'll recycle them into the next pair" — and you've got a campaign that educates, engages, and drives action all at once.
Branch Basics does something similar by framing their product not just as a cleaner, but as a replacement for dozens of toxic products. The environmental math does the selling for them.
The takeaway: Find your number. How much waste has your product prevented? How many plastic bottles replaced? How many trees planted? Put it in the subject line.
The best Earth Day emails don't merely inform. They inspire, and they activate. Whether it's sending back an old pair of jeans for recycling, sharing a sustainability tip, or signing up to volunteer, giving subscribers a clear action makes them feel like participants, not just recipients of promo emails.
Mud Jeans invites customers to return any old jeans (at least 96% cotton) for recycling — and donates to reforestation nonprofit Justdiggit for every pair received. The full, clear loop is: buy consciously, return responsibly, fund a tree. An email built around that story practically writes itself, and an SMS reminder — "Drop your old denim. We'll handle the rest." — is the perfect nudge to get them off the couch.
Branch Basics leans into education, giving subscribers practical tips on detoxing their homes one room at a time. It's useful content that also happens to map directly to their product line. A win-win.
The takeaway: Give your subscribers one clear thing to do. Not five. One. Whether it's a return program, a pledge, a share, or a purchase — make the action obvious and make it feel meaningful.
Earth Day is a high-stakes moment for sustainable brands. The inbox is crowded, the scrutiny is real, and consumers have a finely tuned radar for greenwashing.
The brands that win are sending honest messages — backed by real initiatives, real numbers, and a real point of view. Whether it's a 20% off code tied to a genuine mission or a values email that doesn't “sell” a single thing, the connector is always authenticity.
This Earth Day, let your campaign do what your brand already does: walk the walk.
Happy Earth Day to you and yours. 🌎