Whatsapp invoicing for plumbers

Invoice your plumbing customers
from WhatsApp.

Finished a boiler service, a bathroom fit-out, or an emergency call-out? Message WOPA and the invoice goes out by email while you pack up your tools. No app to open, no paperwork to chase.

QR code to open WOPA on WhatsApp Try WOPA now on WhatsAppScan the QR or tap to open a demo conversation with the WOPA bot.
Built for plumbers

Real plumbing jobs.
Invoiced in seconds.

Boiler service

Annual boiler service completed at a residential property. Landlord needs the invoice for records.

"Invoice Mr Khan £95 for annual boiler service at 22 Beech Lane"
WOPA drafts the invoice, you confirm, and the PDF reaches Mr Khan's inbox within minutes.

Bathroom fit-out

Full bathroom refit including new suite, tiling, and pipework. Job took a week to complete.

"Invoice Claire £3,200 for bathroom fit-out, 8 Park Avenue"
WOPA creates the invoice with your saved bank details and emails the PDF to Claire. Reminders set at 7, 14, and 28 days.

Emergency leak repair

Called out at short notice to isolate and repair a burst pipe under the kitchen sink.

"Invoice Dave £180 for emergency leak repair, burst pipe under kitchen sink"
Invoice drafted, approved, and sent. Ask "who hasn't paid?" any time to see what is outstanding.
How it works

Three steps.
All in WhatsApp.

01

Just ask WOPA

Send WOPA a message like you would a colleague. Customer name, amount, and what the work was. WOPA turns it into a draft invoice.

02

Preview and confirm

Review the customer, work, amount, due date, and bank details. Nothing leaves WhatsApp until you approve it.

03

WOPA emails the PDF

Your customer gets a proper PDF invoice by email. They do not need WhatsApp to receive or pay it. Reminders run at 7, 14, and 28 days.

Key features

Everything you need.
Nothing you don't.

No app needed

WOPA runs inside WhatsApp. No download, no login, no dashboard. You already have the app on your phone.

Professional PDF invoices

Your customers receive a clean A4 PDF invoice by email with your business name, bank details, and payment reference.

Automatic payment reminders

WOPA sends polite follow-ups at 7, 14, and 28 days. You can pause, stop, or adjust reminders from the chat.

Track outstanding invoices

Ask "who hasn't paid?" and WOPA shows every open invoice. Mark one paid and reminders stop immediately.

Early access

Join early.
Pay less.

Founder pricing for the first 200 waitlist signups. No card required today.

Reserve founder pricing
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