Never wonder “is it too soon to ask?” again
Every invoice gets a proven escalation schedule — 3 days before due, then +1, +7, +14 and +30 days. Open DueKindly and see exactly who to nudge today.
Get paid without the awkward follow-up.
DueKindly tells you exactly when to chase an unpaid invoice — and writes the email for you. Friendly first, firm when it counts, with the late fees you're legally owed. No signup, no accounting software, nothing to connect.
Works in your browser. Your data never leaves your device.
Subject: Invoice #1043 is now 12 days overdue
Hi Sam,
Invoice #1043 for £1,200.00 was due on 13 Oct 2026 and is now 12 days overdue.
Could you let me know when I can expect payment? A confirmed date by 1 Nov 2026 would be great.
If there's anything wrong with the invoice, just reply and I'll sort it out straight away.
Thanks,
Maya
Step 3 of 5 · Neutral reminder · filled in automatically
Why DueKindly
The right words, in the right tone
From a warm “just a quick heads-up” to a firm final notice, each reminder is pre-written and filled in with the client's name, amount and days overdue. Click once, it opens in your email. Send it from your own address.
Know what you're owed — down to the late fee
See every unpaid invoice and the total owed in one dashboard. In the UK or EU? DueKindly calculates statutory late-payment interest and compensation and adds it to your final notice.
How it works
Add an invoice.
Client, amount, due date. Takes 20 seconds — no need to move your invoicing anywhere.
Get your reminder plan.
DueKindly builds the follow-up schedule and drops it into your Google, Apple or Outlook calendar.
Send, track, get paid.
When a reminder is due, open the ready-made email, hit send, and mark it done. Mark the invoice paid when the money lands.
Pricing
Free
$0 forever
- Up to 3 unpaid invoices at a time
- Friendly & neutral reminder templates
- One-click email + copy to clipboard
- Calendar reminders per invoice
- JSON backup & restore
Pro Most useful
$6 /month or $49/year (save 32%)
- Unlimited invoices
- All 4 tones incl. firm reminder & final notice
- Edit templates or write your own
- UK & EU late-payment fee calculator
- One calendar feed for all invoices
- CSV export, custom signature & payment link
- “Money recovered” tracker
Cancel anytime. Paidnice starts at $19/mo and InvoiceSherpa at $49/mo — DueKindly Pro is $6.
Free tools
FAQ
Do I need to create an account?
No. DueKindly runs entirely in your browser. Your invoices are stored on your device, not on our servers. Pro is unlocked with a license key you receive after checkout.
Does DueKindly send the emails for me?
You stay in control: DueKindly opens the ready-written reminder in your own email app (or copies it), and you hit send. Emails come from your address, so clients see a personal message — not an automated dunning bot. Calendar reminders make sure you never miss a step.
Will it work with my invoicing tool?
Yes — with any of them. Whether you invoice from Stripe, PayPal, Wise, Word, Canva or a spreadsheet, just add the invoice number, amount and due date. There's nothing to connect.
Is the late-fee calculation legally accurate?
It follows the UK Late Payment of Commercial Debts (Interest) Act 1998 and EU Directive 2011/7/EU for business-to-business invoices, using the reference rate you confirm. It's a helpful estimate, not legal advice — check with a professional before taking formal action.
What happens to my data if I switch computers or cancel Pro?
Export a backup file anytime and import it on any device. If you cancel Pro, nothing is deleted — you keep access to all your invoices and can export them; only Pro features are locked.
That invoice won't chase itself.
Add your first overdue invoice and get the perfect reminder in under a minute.
Try DueKindly free