Collect what you're owed over WhatsApp, and issues the receipt on its own.
WITHMIA reminds your overdue customers of their debt every day over WhatsApp, negotiates payment in the same chat and — when they pay — issues the SII receipt or invoice signed with your certificate. Without calling anyone.
14 days free · No credit card
Collections portfolio
Reminders went out at 09:00
Outstanding
$2.154.300
Collected today
$0
- MVM. VegaConstructora Vega$480.00012 days
- JSJ. SotoFerretería Soto$95.4003 days
- PRP. RíosRíos y Cía.$1.240.00041 days
- CMC. MuñozMuñoz Servicios$260.00027 days
- LBL. BravoBravo Ltda.$78.9006 days
100 a day by default · cap 500, you set it
▼ Scroll down to see how
Sound familiar?
Chasing overdue accounts by hand
Calling one by one, leaving messages and noting in a spreadsheet who has already paid — every day, endlessly.
The debt goes cold
The more time passes without contact, the less likely you are to get paid. But nobody has time to remind 100 people.
Invoicing afterwards is a whole other job
The customer pays and only then does someone have to issue the receipt, reconcile folio numbers and send the PDF.
What WITHMIA does for your business
Automatic daily reminder
Every day, at the time you choose, WITHMIA sends a WhatsApp reminder to the customers who still haven't paid — with their name, your company and the exact amount.
Load your debtors however you like
Upload an Excel file, connect a Google Sheet, add them by hand or push them through the API from your system. The list stays live.
The bot negotiates the payment
When the debtor replies, the assistant takes over the conversation: it checks the real balance, explains the details and generates the payment link without you stepping in.
SII receipts and invoices on their own
As soon as the payment is recorded, your company issues the tax document signed with your digital certificate — folio number and PDF stay in your dashboard.
By Meta's rules, without risking your number
Collections always go out through WhatsApp Cloud API with an approved template. Sending bulk messages from an ordinary WhatsApp is the fast track to getting your number blocked.
Your certificate, encrypted
The digital certificate (.pfx) and its password are stored encrypted and never shown back to you. You start in the SII certification environment and move to production whenever you want.
Up and running in under 10 minutes
Upload your list of overdue accounts
Upload the Excel file, connect your spreadsheet or plug in your system through the API. You set the send time and how many to contact per day.
WITHMIA reminds and negotiates
Every morning the reminders go out. When someone replies, the assistant sees the real balance, clears up questions and sends the payment link.
You collect and invoice without touching a thing
The payment marks the debtor as up to date and triggers the SII receipt or invoice with your certificate. All you do is watch the dashboard.
Collecting on day 6 isn't the same as collecting on day 60
Move the sliders with your own assumptions. Each dot is a day; filled means someone got paid that day.
How often do you actually manage to chase payments by hand?
Arithmetic on your assumptions (days ÷ your cadence), not a promise of recovery.
From the reminder to the receipt, without you lifting a finger
Tap any stop on the track to stay on it.
Sample conversation
WhatsApp Cloud API · it looks the balance up in your system, it doesn't make it up
In your dashboard
- Reminder sent
- Conversation open
- Balance checked
- Payment link sent
- Marked as paid
- Electronic receipt issued
No reply? The reminder goes out again tomorrow at the same time, until they pay or you remove them.
Running bulk collections from your everyday WhatsApp is the fast way to lose it
Flip the switch and watch what happens to your number.
Your number
At risk of restriction
- Bulk sending to people who never wrote to you first
- Blocks and reports from the people receiving them
- Meta can restrict the number
Your day-to-day customer service
It's the same number you serve customers with: it all goes down together.
The message that goes out
Everyone writes whatever comes to mind and forwards it to the entire list.
An illustration of the risk (not a statistic): it only takes a few people blocking or reporting you.
WITHMIA collections only go out through the Cloud API, never through the QR-code WhatsApp.
Nobody can guarantee that Meta will never act on a number. We use their official channel and respect their limits.
We don't make calls, send SMS or list anyone in debtor registries: we cover the reminder and the conversation.
Bring your overdue accounts however you keep them today: spreadsheet, system or by hand
Choose where your list comes from and how fast you want the reminders to go out.
You upload the .xlsx you already keep
Name, company and amount: those columns fill in the approved template.
| Name | Company | Amount | Past due |
|---|---|---|---|
| M. Vega | Constructora Vega | $480.000 | 12 days |
| J. Soto | Ferretería Soto | $95.400 | 3 days |
| P. Ríos | Ríos y Cía. | $1.240.000 | 41 days |
| C. Muñoz | Muñoz Servicios | $260.000 | 27 days |
Sample data: the real numbers are yours to add.
Debtors in your portfolio
Reminders per day
You get through your entire list in
5 days
500 ÷ 100 per day. When the round is over, it starts again with whoever still hasn't paid.
Payment doesn't end when the money lands: it ends when the document goes out
Collecting and invoicing, one single motion.
The payment comes in
Flow, Webpay, Mercado Pago or Khipu, in pesos.
The debtor is up to date
It drops off the reminder list by itself.
The SII document goes out
Receipt or invoice signed with your certificate.
- Folio number
- Assigned by the SII on issue
- Signature
- Your digital certificate (.pfx), encrypted
- PDF and XML
- In your dashboard
- Issuer
- Your company, with your SII resolution
You can start in SII certification and move to production once you've tested it.
WhatsApp Cloud API collections and SII invoicing live together in the plan Team, $44.990 a month.
14-day free trial, no credit card.
Recommended plan for Collections & Billing
Team $44.990 CLP/month · VAT included
Active collections and SII electronic invoicing come with Team: on top of every channel, catalog, scheduling and CRM, you add a 3-agent team and WhatsApp campaigns.
Need more volume, more users and premium AI models? Max, $149,990/month.
Frequently asked questions
Do I need anything special to run collections over WhatsApp?+
Yes: collections go out through WhatsApp Cloud API (Meta's official channel) with an approved template, not through the WhatsApp connected by QR code. That's deliberate: sending bulk messages from an ordinary number is the fastest way to get it blocked by Meta. WITHMIA creates and manages the template for you.
Can the bot make phone calls or send SMS?+
No. Today WITHMIA collections run over WhatsApp; we don't make calls or send SMS. If your collections depend on phone calls, WITHMIA works as the first layer (the reminder and the negotiation over chat), not as a replacement for your call center.
How does the system know someone has already paid?+
Once the payment is recorded in WITHMIA, the debtor is marked as paid automatically and stops receiving reminders. That same payment is what triggers the SII receipt or invoice.
What do I need in order to issue SII tax documents?+
Your digital certificate (.pfx) with its password, the issuer details and your SII resolution. You upload them once in the Finance section and they stay encrypted. You can start in the SII certification environment and move to production once you've tested it.
The business that answers first, wins.
Get your assistant running today. Free, no card, no code.
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