You did the work. They enjoyed the result. Now they're ignoring your invoice.
Stop Being Polite About
Money You Already Earned.
DemandFlowww turns silence into a professional, legally-formatted demand letter in 60 seconds — no lawyer, no retainer, no more awkward follow-ups. $29 once — and it becomes their problem, not yours.
Send a Demand Letter When a Client Doesn't Pay
A legally-formatted demand letter in 60 seconds. No lawyer needed.
100% Money-Back Guarantee
If the letter doesn't get you paid, we'll refund every cent. No questions asked. The only risk is leaving your invoice unpaid.
Choose a letter type:
NDA & Contracts
Non-Disclosure Agreements, Service Agreements & more — from $15
Late Fee Calculator
Calculate statutory interest by state — free tool
Retirement Simulator
Social Security + 401(k) projections — free calculator, full report $9
This is exactly what you'll get — filled in with your details, ready to download the moment you check out.
What happens after you hit send
You download the PDF
Real letterhead, precise legal formatting — ready the moment checkout clears.
They open it and see you're serious
Not another invoice nudge. The tone shifts before they finish the first sentence.
Payment arrives
Usually within 48 hours — most clients pay before your deadline even hits.
You feel that relief
Proof that being direct works — and you never had to ask twice.
$29 vs. the alternatives
A single unpaid invoice usually dwarfs the cost of getting it paid. Here's what recovering your money normally looks like:
| Option | Typical cost | Time |
|---|---|---|
| Hire a lawyer | $300–$500+ | Days to weeks |
| Collections agency | 20–50% of the invoice | Weeks |
| Write it off | 100% of what you're owed | Forever |
| DemandFlowww | $29 flat | 60 seconds |
Freelancer Legal Kit
Get all 6 templates for $79 — save $85 vs buying individually.
Need more than one letter? See our Pro plan →
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Enter your email and we'll show you exactly what a finished DemandFlowww letter looks like — no payment required.
Built for people who do the work — and deserve to be paid
Freelance Designers
"Final files delivered" — then radio silence when the invoice is due.
Web Developers
The site is live and earning them money. Your last milestone? Still unpaid.
Writers & Consultants
You delivered the strategy. They ghosted the moment it was time to pay.
Photographers & Creatives
They used your photos everywhere — everywhere except the payment portal.
Contractors & Trades
The job's done and signed off, but the final check keeps 'getting lost.'
Small Business Owners
A late-paying client is quietly wrecking your cash flow this month.
The hard way vs. the DemandFlowww way
Doing it yourself
- Google "how to write a demand letter" for an hour
- Second-guess every sentence — is this even legally sound?
- Pay a lawyer $250–$400 just for a first letter
- Wait days for a draft to come back
- Send something that looks amateur and gets ignored
- Give up and write off the money
With DemandFlowww
- Pick your letter type and fill a short form
- Get airtight, professional legal language automatically
- Pay a flat $29 — no retainer, no hourly billing
- Download your finished letter in about 60 seconds
- Send a letter that looks like it came from a law office
- Get paid — or get your money back
How it works
Step 1
Tell us what happened
Pick your letter type and answer a few plain-English questions — who owes you, how much, and what happened. No legal jargon, no blank page staring back at you. Most people finish before their coffee gets cold.
Step 2
Pay $29, not $300
One secure Stripe checkout — no account, no subscription, no upsell maze. A lawyer charges $300+ in retainer fees for this exact letter. Think of the $29 as the cost of finally doing something instead of nothing.
Step 3
Hit send, feel different
Your letter appears instantly — real letterhead, precise legal language, ready to download as a PDF. Attach it to an email or mail it certified. The second you hit send, you stop being the freelancer who's still waiting.
Freelancers are getting paid
★★★★★“Shot a 40-person corporate headshot day — $450 invoice, three weeks of dead silence after. I sent the letter on my lunch break. By 2pm I had a Zelle notification and an apology I didn't even ask for.”
Paid in 2 hoursMaria Alvarez
Photographer, Savannah, GA
★★★★★“Rebuilt their entire checkout flow — conversions went up 30% the month after launch. The final $3,800 milestone sat "in review" for six weeks. Sent the letter Tuesday night, woke up to the wire confirmation Wednesday morning.”
Paid next morningDerek Osei
Web Developer, Austin, TX
★★★★★“My homepage copy has been live on their site for two months, still generating leads for them. "Accounting is backed up" three times running on a $1,200 invoice. Letter went out Monday. Money landed Thursday.”
Paid in 3 daysInes Ferreira
Copywriter, Chicago, IL
★★★★★“An $8,500 growth strategy engagement, invoiced in spring, still unpaid by summer. I kept hearing "next week" from their CFO. The letter mentioned legal remedies once — that's all it took. Paid in full nine days later.”
$8,500 recoveredOwen Reyes
Business Consultant, Raleigh, NC
★★★★★“It was "only" $680 for a logo package, so I almost let it slide — chasing small invoices always feels like more trouble than it's worth. Sent the letter Thursday morning, had the Venmo notification before dinner.”
Paid same dayRenee Kim
Brand Designer, Portland, OR
★★★★★“Finished a kitchen remodel in the spring. Homeowner kept "forgetting" the final $2,100 draw. My letter went out Monday with a 10-day deadline. Check was in my hand by Thursday — never had to say a word to them directly.”
Paid in 3 daysDiego Morales
General Contractor, San Antonio, TX
Illustrative examples reflecting the kind of outcomes DemandFlowww letters are designed to produce. Names and identifying details have been changed.
Frequently asked questions
A demand letter is a formal written notice that requests payment for work completed. You should send one when a client has not paid an invoice after reasonable follow-ups — it puts your claim in writing, signals you're serious, and is often the step before small claims court.
Your professionally formatted demand letter is generated instantly after checkout — usually within 60 seconds. You can download it, save it as a PDF, and send it right away.
No. A demand letter does not require a lawyer. DemandFlowww generates a legally-formatted letter based on your details that you send directly to your client. For disputes involving very large amounts or complex contracts, consulting an attorney is always an option.
We stand behind our letters with a 100% money-back guarantee. If you're not satisfied, email us and we'll refund your $29 — no questions asked. You've got nothing to lose and an unpaid invoice to recover.
Yes. All payments are processed by Stripe, a PCI-DSS Level 1 certified payment provider — the same infrastructure used by Amazon and Google. DemandFlowww never sees or stores your card details.
We only use the details you enter to generate your letter. We don't sell your data, and your letter is yours to keep. See our Privacy Policy for the full details.
Stop Chasing. Start Collecting.
Every day you wait is another day your money sits in someone else's account. Send a letter that gets taken seriously — in the next 60 seconds.
Make Them Pay — $29Backed by our 100% money-back guarantee.