Stop chasing invoices.
Start getting paid.
NudgeStack automates your invoice follow-ups with smart, escalating email sequences. From friendly reminders to firm notices — so you can focus on your work, not chasing payments.
How it works
Get set up in minutes. Start collecting payments on autopilot.
Import
Upload a PDF invoice or create one manually. NudgeStack extracts the details automatically.
Automate
Choose a reminder sequence. Emails escalate in tone from gentle nudge to firm follow-up.
Collect
Sit back and get paid. Sequences stop automatically the moment payment is received.
Everything you need to get paid on time
Powerful tools designed specifically for freelancers and small businesses who are tired of late payments.
Escalating Tone Sequences
Start with a friendly nudge and gradually increase urgency. Each step is carefully timed and worded to maximize response.
System-Sent Reminders
Emails are sent from your address automatically. You never have to write, schedule, or send a follow-up again.
Email Open Tracking
Know exactly when your client opens a reminder. Use read receipts to time your next move strategically.
Auto-Stop on Payment
The moment a payment is detected through Stripe, the reminder sequence stops. No more embarrassing double-asks.
Deliverable Paywall
Gate access to files or deliverables behind payment. Clients get access instantly once the invoice is paid.
PDF Invoice Import
Upload any PDF invoice and NudgeStack extracts the key details — client, amount, due date — automatically.
Late payments are costing you more than you think
The numbers tell the story. Freelancers and small businesses lose thousands every year to unpaid and late invoices.
of freelancers are paid late
average payment delay
lost chasing payments
Sources: Freelancers Union, FreshBooks & Payoneer industry surveys
Simple, transparent pricing
Start free for 14 days. No credit card required. Cancel anytime.
Starter
For freelancers just getting started
- Up to 25 active invoices
- 3 reminder sequences
- Email open tracking
- Auto-stop on payment
- PDF invoice import
- Email support
Pro
For growing businesses with more clients
- Unlimited active invoices
- Unlimited sequences
- Email open tracking
- Auto-stop on payment
- PDF invoice import
- Deliverable paywall
- Custom email domains
- Priority support
Frequently asked questions
Everything you need to know about NudgeStack.
You can upload PDF invoices directly, and NudgeStack will automatically extract the client name, amount, due date, and email address. You can also create invoices manually or connect to your existing invoicing tool.
Reminder emails are clean, professional, and sent from your own email address. They look like personal messages you wrote yourself — no branding or 'sent via NudgeStack' footers. Your clients will never know they're automated.
No. Every email is sent from your email address with your name. The tone is natural and conversational, not robotic. Clients receive what looks and feels like a personal message from you.
Absolutely. You have full control over every template in your reminder sequence. Edit the subject line, body, and tone for each step. You can also create multiple sequences for different client types or invoice amounts.
NudgeStack automatically detects payments through Stripe and immediately stops the reminder sequence. No more awkward 'please pay' emails landing after the invoice has already been settled.
Yes. With the deliverable paywall feature, you can gate access to files, links, or project deliverables behind payment. Once the invoice is paid, access is automatically granted. It's a powerful but professional way to incentivize timely payment.
FreshBooks sends one-size-fits-all reminders. NudgeStack uses escalating tone sequences that start friendly and gradually become more firm. Plus, you get email open tracking, auto-stop on payment, deliverable paywalls, and much more granular control over timing and messaging.
We offer a 14-day free trial with full access to all features — no credit card required. After that, plans start at $19/month for freelancers and small businesses.
Ready to stop chasing invoices?
Join thousands of freelancers who automated their invoice follow-ups with NudgeStack. Start your free trial today.