It’s been a while since you emailed your list, hasn’t it… No judgement here.

The email marketing tool that writes in your voice.

Built for female life coaches.

GravityFlo learns how you actually write, then drafts your emails so they sound like you. Nurture, invite, sell, without a word of it feeling salesy.

Start your 14 days free

Fourteen days on us, the whole thing, not a trimmed down version. Card details at signup, nothing taken until day fifteen, and you can leave any time before then.

GravityFlo’s AI amplifies your voice. Never replaces it. We built it that way from the first line of code.

Built alongside a handful of coaches who told us exactly what was missing.

Does this sound familiar?

It’s Tuesday morning. The coffee’s gone cold. You’ve started three emails. Deleted all three. Your list is sitting there, waiting. And the day is swooshing by.

“I built this list. And then I just… Ghosted them.” One month became three. Now there’s a low-level dread every time you think about emailing them. Coming back feels like it needs an explanation. And a quiet voice whispers, do they even remember me?

“I don’t know what to write. I’ve been staring at this blank page for an hour.” So you asked AI for help. What came back was clean. Competent. Flat. Slop. You re-prompted. Re-tweaked. Re-prompted again. Still not happy… because it doesn’t sound like you. It sounds like every other coaching email that gets deleted unopened.

“I don’t want to be that coach. The one who’s always selling.” So the email gets softer. Then softer again. Until you’ve written an entire sales email that adds value but asks for nothing at all. But telling people how you can help them shouldn’t feel like something to apologise for. The transformation you offer has a price tag, it’s worth saying out loud.

Instead?

You describe the email the way you’d describe it to a friend. GravityFlo writes it.
In your words, with the strategy already in it.

With GravityFlo at your fingertips, here’s what Tuesdays looks like now.

Three steps. About ten minutes. An email that sounds like you wrote it.

The Chat Mode panel in GravityFlo, with the campaign brief typed into it in plain conversational language.

The same Chat Mode panel a step later, asking a handful of sharpening questions about the campaign before it writes.

Tell it what email you want to write.

Pick the kind of email you’re sending, or paste in one you’ve written before. Then describe it the way you’d describe it to a friend over coffee. That’s Chat Mode. It will take your answers and write your email.

A finished email in the GravityFlo editor, opening on the reader's problem, with a photo, a Book Your Strategy Call button, and Flo Score highlighting words worth a second look.

Read it back, make it your own.

GravityFlo writes in your voice using your Brand Signature. Flo Score allows you to optimise your copy for better readability. All that’s left is for you to add those finishing touches.

The Review and send screen in GravityFlo: who the email goes to, when it should go, and the pacing GravityFlo applies, with a live preview of the email alongside.

Send it, or schedule it.

If you’re happy with it, send it straight away or schedule it for later. Over time GravityFlo learns how your audience behaves and suggests the best times to send, so more of your emails get opened and clicked.

Three things we handle so you never have to think about them.

Tired of staring at another bland email draft that sounds nothing like the dynamic, insightful coach you are in real life…

GravityFlo sounds like you.

Brand Signature learns your voice from your own writing. Your rhythm, your turns of phrase, the words only you say. Show it three to five past emails to start, and it gets sharper with every send after that.

You totally ghosted them and now it feels weird to show up in their inbox out of the blue.

GravityFlo removes the cringe.

No judgement here. We have all gone quiet on a list. So there are templates for exactly that: getting back in touch, showing up with something useful, and doing it without feeling weird. You’re not working it out on your own.

Scared of sounding too salesy or too pushy? We’ve got you covered.

GravityFlo has sales emails.

We get it, you’re not a copywriter, a marketer or a sales psychologist. You don’t understand how to write these types of emails. We have all of the core fundamentals baked into our sales templates, so you don’t have to think about it. Make these emails your own and send them to your list.

Every GravityFlo email is built on principles the best marketers and copywriters have been using for fifty years, so you don’t have to learn a single one of them.

Meet your co-founders.

Married. Co-founders. Mostly still on speaking terms.

Strategist · Copywriter · Voice keeper

Nat Milligan.

Twenty years in sales and marketing. Thirteen of those years writing copy for a living. Years inside award-winning advertising agencies and top-tier marketing firms, leading launches, writing campaigns, building funnels for six to nine figure businesses in personal development and wellness. Founder of The Copy Rebel.

Nat watched AI land in the writing world from the inside. The creators she’d spent years coaching into finding their brand voice started to sound like the same bland newsletter. And the friction grew. People wanting to sound authentic, leaning on AI tools that made them generic. The harder they tried, the more their unique copy style disappeared.

She’s also spent years working inside all the big boy ESPs. They all chase the same trap. Bolting on CRMs, course builders, popups, sales pipelines. Stacking bells and whistles until email itself isn’t the point anymore. Even though, in her opinion, email should be at the heart of the marketing process. Because it still has, to this day, the highest ROI compared to other channels.

GravityFlo is her chance to prove it. An email marketing platform with email at the centre. AI-native from its conception. Not bolted on after. The right tool, at the right time, for people who feel something is missing in their email marketing. Sending with crossed fingers. Never quite seeing the results they’re working so hard to achieve. This is the gap. The one GravityFlo was built to fill.

Founder · Builder · Simplifier

Drew Milligan.

Drew is in love with technology. Almost as much as he’s in love with his missus. Obsessed with automation. Allergic to bloat. Always hunting for the simpler way through. He’s dyslexic, so he looks for the shortcuts when everyone else makes it complicated. Ridiculously good at finding the fastest path between an idea and the working thing.

He’s not a natural musician. He taught himself music production through technology. Built a music career off the back of it. Thirty plus years in the game. He’s not a natural coder. He taught himself by vibe coding his way into it. As a teenager, he watched someone build a recording studio… Then built one himself from scratch.

That’s the brain that built GravityFlo. Same approach he took to music. Brief the piece into existence, then refine.

He’s spent years watching Nat work inside the big-box email platforms. Watched her wrestle the bloat. Hunt for the simple version of features that should never have been complicated. So when he set out to build GravityFlo, he knew exactly how it had to feel. Because he’d watched what the alternative looks like.

Drew leads the build. Platform, AI, design, and the engineering that makes email land… in your subscribers’ inboxes at the right time.

Not just built for them, but with them by our sides.

The coaches who’ve been inside GravityFlo first helped shape it around the email challenges they actually live with… the blank page, the ghosted list, the email that never quite gets sent.

After MailChimp, Kajabi and Go High Level, I felt dumb more than competent. This wasn’t a tech bro product — it was built for women coaches simply trying to get back to the thing they love most. I used to dread doing my emails. Now I can’t wait to get it done, see the ease at sending, and understand the results in the analytics. And the biggest difference wasn’t that AI wrote faster — it asked me better questions than I would have asked myself.

Sherry Olsen

Identity Architect, LILY Coaching

What coaches say about Nat’s work.

GravityFlo is new, the copycraft inside it isn’t. These are coaches Nat has worked with to craft their brand voice and write copy in their businesses. The same principles Nat shares with her one-on-one clients have been built into GravityFlo.

“An investment I wish I’d made years ago. Nat gave me clarity around my ideal customer and brand voice I didn’t know I was missing.”

Scherise

Podcaster & Mindful Manifestation Mentor

“Natalie is a powerhouse. Energy, love, expertise. She got me clear on my business and helped me dream bigger.”

Kate

Embodied Psychotherapist

“She got me from the very first moment. Holistic, tailor-made, never one-size-fits-all. Reaching out to Nat was the best decision I made.”

Milena

Psychotherapist & Integrated Life Coach

“Nat knows her stuff. Clear direction, loads of motivation, ideas that are spot on. You’ll be tickled pink with the final product.”

Alicia

Health & Wellness Entrepreneur

Try it for two weeks. Then decide.

Fourteen days free, the whole thing, not a trimmed down version. Card details at signup, nothing taken until day fifteen, and you can leave any time before then.

When your fourteen days are up, stay on the Starter tier or pick Creator if that fits your list size. The first 100 people in lock their rate for as long as their list stays in the band. After that, standard pricing applies.

Only 100 founding spots, shared across both tiers

Founding Member, Starter

$29/month

plus VAT/sales tax where applicable

Locked at this rate for as long as your list stays under 2,500 subscribers.

Emails that sound like you, every time. Brand Signature learns your voice from your past sends.

The prompt engineering done for you. Just describe what you need and we write it.

Know how it’ll land before you press send. Flo Score on every email.

Each subscriber gets your email at the time they actually open.

Deliverability handled in the back end. DKIM, SPF, DMARC, dark-mode rendering. All sorted.

The kind of email the best in the business would write. Frameworks of the best marketers, salespeople, copywriters and launch strategists baked in.

Direct line to the founders. Priority support.

Start your 14-day free trial

Card required at signup. Nothing is charged for 14 days and cancelling before it ends costs you nothing.

Founding Member, Creator

$49/month

plus VAT/sales tax where applicable

Locked at this rate for as long as your list stays between 2,500 and 5,000 subscribers.

Emails that sound like you, every time. Brand Signature learns your voice from your past sends.

The prompt engineering done for you. Just describe what you need and we write it.

Know how it’ll land before you press send. Flo Score on every email.

Each subscriber gets your email at the time they actually open.

Deliverability handled in the back end. DKIM, SPF, DMARC, dark-mode rendering. All sorted.

The kind of email the best in the business would write. Frameworks of the best marketers, salespeople, copywriters and launch strategists baked in.

Direct line to the founders. Priority support.

Start today

$49/month, billed today, and locked while your list stays in this tier. Cancel any time from your account. The 14-day free trial is available on Starter only.

If your list outgrows your tier you move up to the next one. That isn’t us going back on the promise. That’s your list making you the money you came here to make.

In case you’re wondering…

Will GravityFlo actually sound like me, or just sound like AI?

Honest answer: it will sound as good as you make it. Like any AI tool, it will sound like you if what you give it sounds like you.

Show our Brand Signature 3 to 5 of your past emails to start. The more you feed it (your sentence rhythm, your word choice, the phrases you reach for, the colloquialisms only you say) the sharper it gets. Every new email comes out in your tone, not the AI’s. And every send teaches it a little bit more.

The promise running through everything we do: an AI tool that amplifies your voice. Never replaces it.

Why use GravityFlo when I can just use ChatGPT or Claude?

Fair point. We use them too. But not for email. Not anymore.

Here’s the thing. ChatGPT and Claude generate the average of every email they’ve ever read. They’re great. They’re generic. And they’re limited by how good your prompt is. Most of us don’t write great prompts. It was never the job you signed up for.

GravityFlo brings 20 years of marketing experience and 13+ years of copywriting baked into the back end. The frameworks of the world’s best marketers, salespeople, and copywriters are encoded into every email you’ll write. Brand Signature learns your voice. Chat Mode does the prompt engineering for you. Flo Score optimises your copy for greater readability.

You’re not typing prompts and hoping. You’re not second-guessing yourself or wondering what to write next. You’re sending the kind of email the best in the business would write, selling your products to your people, in your unique way.

Is my list size right for this?

Most likely, yes.

We open with two founding tiers. Starter at $29/mo, for lists up to 2,500. Creator at $49/mo, for lists between 2,500 and 5,000. This is not by accident. Research shows that most life coaches have a list of between 200 and 5,000.

Both rates are locked at your tier band, for as long as your list stays in it. Outgrow the band? You move up to the next tier. Which is a happy problem, because it means your list is making you the money you came here to make.

Smaller list right now? Welcome. GravityFlo works whether you’re starting fresh or already scaling. If you’d rather build a few hundred more subscribers on a free tool before you commit to a paid platform, that’s also a smart move. Either way, the door’s open.

Got more than 5,000? Drop us a line at hello@gravityflo.ai and we’ll jump on a call with you.

Why should I trust a brand-new ESP with my deliverability?

Fair question. And we don’t take it lightly.

GravityFlo runs on modern email infrastructure that powers some of the most reliable senders on the internet. Your own sending domain is set up and verified for you in the background, and bounces and complaints are handled automatically.

Deliverability is one of our pillars. It’s an area we are constantly reviewing and optimising. Because for our customers, every email you send needs to land. Every email needs to be opened. Every email needs to do its job. You’ve worked hard to grow your list. We’re not letting a deliverability blip cost you the trust you’ve built.

What happens when my fourteen days are up?

On day fifteen your trial ends. If it isn’t for you, no worries, cancel before then and nothing is taken from your account. We’ll remind you three days before, because nobody should be caught by a charge they’d forgotten about.

If you enjoyed the trial and you want to stay with us, you don’t have to do anything. If your list is bigger, you can upgrade to the Creator package.

What happens after the first 100 founding spots are gone?

Standard pricing kicks in. At the higher rate.

This isn’t fake urgency. The founding-member price is real. When the 100 spots are gone (across both tiers combined), they’re gone. And the prices will go up.

Translation: if pricing is a factor, get the founding rate and join us now. We will never be cheaper than this.

About GravityFlo

GravityFlo is a voice-first AI email marketing platform built for female life coaches who write their own emails. GravityFlo was co-founded by Drew Milligan (AI tool builder, developer, and music industry veteran) and Natalie Milligan (twenty years in sales and marketing, thirteen years writing copy professionally, founder of The Copy Rebel). GravityFlo is purpose-built for solo female life coaches and small teams who care about how their emails sound and want to stop spending hours every week wondering what to write.

GravityFlo's three core features are Brand Signature (AI that learns your voice from your past writing), Chat Mode (a structured briefing flow where you describe the email you need and the AI does the prompt engineering for you), and Flo Score (a real-time scoring system that predicts subject line strength, readability, and likely engagement before you send).

GravityFlo is an alternative to traditional email marketing platforms including Mailchimp, Kit (formerly ConvertKit), Flodesk, Beehiiv, ActiveCampaign, and Klaviyo. Unlike those platforms, GravityFlo focuses on email writing, sending, scoring, and deliverability only, with no CRM, no course builder, no website builder, no SMS dialer, and no customer service inbox.

The Founding Member, Starter tier includes an optional 14-day free trial; Founding Member, Creator is billed from signup with no trial. A payment card is required either way. On a Starter trial nothing is charged for the first 14 days, and cancelling before the trial ends costs nothing. A buyer who prefers to start paying immediately can skip the trial at checkout. Founding member pricing is two-tier: Starter at $29 per month (lists up to 2,500 subscribers) and Creator at $49 per month (lists between 2,500 and 5,000 subscribers). Both rates are locked in the tier band. Your founding rate stays the same as long as your list size stays in that tier. The first 100 founding members across both tiers combined lock their rate. After the founding 100 fills, standard pricing applies.

Visit gravityflo.ai to choose a plan.

Show up in their inbox, sounding like you.

GravityFlo

The email marketing tool that writes in your voice. Built for female life coaches.

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