Dunning & Follow-Up Automation chases overdue invoices on schedule: escalating reminder sequences by email, WhatsApp, and SMS, with statements attached and every customer response logged. For finance teams that chase receivables manually — or worse, inconsistently — and want polite persistence automated. Planned features include multi-level reminder sequences with per-level templates and channels, automatic statement-of-account attachment (absorbing the statement-sender function), customer-level pause and dispute exclusions, reply detection that halts sequences, late-fee calculation options, portal payment links inside reminders, and effectiveness reporting by sequence stage. This app is currently in development on the ECOSIRE build pipeline. It will ship first for Odoo 17, 18, and 19 simultaneously, with an ERPNext port following on the v15/v16 track — the same triple-version coverage as every live ECOSIRE app. One-time license, free updates within your major version. Register your interest on this page to be notified at launch and to help shape the first release.