SendyStack: WhatsApp messaging, invoices, payments, property management, WooCommerce and Shopify, a developer API and an AI connector
Three verbs.
One chat.
The whole billing loop happens where your customers already are, and it closes itself.
- 01Send.A branded invoice lands in WhatsApp with the PDF, the amount and a Pay now button.
- 02Collect.The customer replies in plain words. The M-Pesa prompt pops up on their phone.
- 03Reconcile.The receipt goes back, the invoice closes and the balance updates. You do nothing.
Everything to
get paid.
Explore the product 01WhatsApp messagingOfficial Cloud API, templates and flows02Invoices & receiptsBranded PDFs that pay themselves03PaymentsM-Pesa, Stripe and PayPal04Property ManagementRent collected inside WhatsApp05Store integrationsWooCommerce and Shopify06AI ConnectorLet agents work your workspace07Developer APIPay as you go, from KES 0.30
30days
Full-access free trial
1.20KES
Per utility WhatsApp message
3rails
M-Pesa, card and PayPal
0apps
For your customers to install
Receipt
Amount received
KES 5,000
InvoiceINV-0042
Paid by0712 ••• 678
ChannelM-Pesa in WhatsApp
BalanceKES 7,500
Sent to the customer
Receipts that
write themselves.
Every payment updates the invoice, the balance and the statement, then sends a PDF receipt back into the chat.
Try us.
Get paid sooner.
Every workspace starts with 30 days of full access. No card needed.