PTT TELEGRAM · 4notify
No. BR-RS-007Date 2026-05-26
REGULAR
07
Telegram 07 of 08 · Telecom
FiledEmailSMS

Telco bills MTS / Yettel / A1: billing notifications

MTS, Yettel and A1 Serbia process 7M+ customer bills monthly. 4notify integrates multi-channel notifications for billing cycle: email with PDF, SMS with quick-pay link, push fallback if billing app installed.

Context

Customers miss billing emails (spam folder) and pay late. Telco loses money (interest), customer gets late fee.

Legal framework
Zakon o elektronskim komunikacijama čl. 156

Written billing mandatory; e-delivery allowed with consent.

NBS Odluka o platnim instrumentima

Quick-pay link must lead to PCI DSS compliant gateway.

Steps
01

Billing cycle webhook

Telco sends bill event to 4notify on 1st of each month.

02

Email PDF + SMS quick-pay

Email with CSI A4 invoice PDF; SMS with shortened URL to pay portal.

03

T+15 escalation

Second notification 15 days after first; third with suspension warning T+25.

Code
json
{ "template": "telco_bill_first", "channels": ["email", "sms"], "customer": { "id": "MTS-RS-481923", "phone": "+381641234567", "email": "[email protected]" }, "bill": { "period": "2026-05", "amount": 2540, "currency": "RSD", "due_date": "2026-06-15", "pay_url": "https://mojmts.rs/pay/481923" } }
Sample message
SMS

MTS: Your bill for 05/2026: 2,540 RSD. Due 15/06. Pay: mojmts.rs/pay/481923

Checklist
  • Billing webhook connected
  • PDF/A-1b bill template
  • Quick-pay link PCI DSS compliant
What 4notify does differently

Direct integration with Serbian telco billing systems with PCI DSS quick-pay link.

FAQ
Does it work for prepaid customers?

Prepaid has no monthly bills. 'top_up_reminder' template is relevant.

Start free

14 days, no card. Support in Serbian and English.

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