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Automated reminders for unpaid invoices

Purpose

1.1. Ensure timely payments by sending automated reminders to customers with unpaid invoices.
1.2. Reduce overdue accounts, streamline receivables, and increase cash flow reliability for alternator wholesalers.
1.3. Minimize manual follow-ups, enhance customer communication, and maintain positive client relationships.
1.4. Integrate reminders across SMS, email, in-app messages, and voice calls to cover every communication channel relevant to electrical parts suppliers.

Trigger Conditions

2.1. Invoice status marked as ‘unpaid’ or ‘overdue’ in ERP/accounting system.
2.2. Reached preset due date threshold (e.g., 0/3/7 days overdue).
2.3. Customer not responded or paid after previous reminders.
2.4. Repeated trigger for recurring overdue customers based on historical patterns.

Platform Variants


3.1. Twilio SMS
• Feature/Setting: SMS API — configure automated messaging triggered from overdue invoice status. e.g., POST to /Messages with {To, Body, From} fields populated with customer/contact/invoice info.

3.2. SendGrid
• Feature/Setting: Transactional Email API — set up dynamic templates and schedule sends via POST /mail/send when unpaid invoices are detected.

3.3. Slack
• Feature/Setting: Incoming Webhooks — notify internal sales or AR team in a Slack channel when a customer is overdue via webhook endpoint.

3.4. Salesforce
• Feature/Setting: Process Builder or Flow — trigger email/SMS reminders when Opportunity or Invoice status changes to ‘overdue’.

3.5. HubSpot
• Feature/Setting: Workflow Automation — enroll contacts with unpaid invoices into a reminder sequence and send via email/SMS integrations.

3.6. Xero
• Feature/Setting: Accounting API — fetch unpaid invoices via GET /Invoices, then trigger communications if “Status: AUTHORIZED, AmountDue > 0”.

3.7. QuickBooks Online
• Feature/Setting: Webhooks or Reports API — monitor for changes in invoice status and initiate reminders using external communications service.

3.8. Zoho Books
• Feature/Setting: Invoice API and Automation Rules — auto-email reminders by detecting overdue invoices using GET /invoices?status=overdue.

3.9. Mailgun
• Feature/Setting: Send Email API — send custom reminder templates triggered by webhook or backend logic on unpaid invoices.

3.10. WhatsApp Business API
• Feature/Setting: POST /messages endpoint — send direct, templated WhatsApp messages to customers with overdue balances.

3.11. Microsoft Teams
• Feature/Setting: Incoming Webhook — post alerts for AR staff or management for high-value overdue invoices.

3.12. Pipedrive
• Feature/Setting: Workflow Automation — trigger actions when deals reach a stage labeled ‘Invoice Sent but Unpaid’.

3.13. Gmail API
• Feature/Setting: Users.messages.send — programmatically send reminder emails to specific contacts once an unpaid status is flagged.

3.14. FreshBooks
• Feature/Setting: Invoice Event Triggers — auto-send emails when an invoice becomes overdue, configurable in automation settings.

3.15. Google Sheets
• Feature/Setting: Sheets API — monitor an invoices sheet for ‘Unpaid’ status, then use Apps Script to email or message customers.

3.16. SAP Business One
• Feature/Setting: Service Layer API — query invoice status and trigger external scripts to dispatch reminders.

3.17. Odoo
• Feature/Setting: Automated Actions — detect unpaid invoices via ERP records, then send email/SMS using mail or SMS module.

3.18. Stripe
• Feature/Setting: Invoice Finalization Webhook — when an invoice is overdue, trigger webhooks to send reminders via user’s chosen channel.

3.19. ActiveCampaign
• Feature/Setting: Automations — suitable for email sequences to nurture late-paying customers and prompt payment with personalized templates.

3.20. Intercom
• Feature/Setting: Custom Bots & Campaigns — send in-app or email messages to users with unpaid invoices after specific rules are met.

3.21. Outlook API
• Feature/Setting: Graph API /SendMail — automate reminders to customers or B2B contacts for overdue payments.

3.22. Zoho CRM
• Feature/Setting: Workflow Rules — auto-email or SMS follow-up when custom “Invoice Status” field changes to unpaid/overdue.

3.23. Monday.com
• Feature/Setting: Automations — create rules to notify finance teams and trigger emails/SMS based on board item (invoice) status.

3.24. Telegram Bot API
• Feature/Setting: Bot /sendMessage endpoint — if customer allows, send reminders directly on Telegram for tech-savvy B2B clients.

Benefits

4.1. Ensures fast action on unpaid invoices, reducing DSO (Days Sales Outstanding).
4.2. Reduces manual workload, freeing up staff for high-value tasks.
4.3. Minimizes human error and ensures follow-up consistency.
4.4. Multi-channel reminders increase the chance of customer response and faster payment.
4.5. Promotes a professional, reliable brand image with timely communication to all clients.

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