InvoicifyAI Alternative: Dun

InvoicifyAI offers AI-powered voice calls for invoice collection. An AI agent calls your clients by phone to follow up on overdue payments.

Dun takes a different approach entirely. It uses email-based escalation through 7 stages of increasing urgency. No phone calls, no AI voice agents, no robocalling your clients. Just professional, structured email follow-up.

Email vs. voice: two different approaches

AI voice calls (InvoicifyAI): An AI calls your client about their overdue invoice. The client receives an automated phone call from a robot discussing payment.

Email escalation (Dun): A structured sequence of 7 emails sent from your email address. Each stage increases in urgency. Your client reads the email on their own time and can respond or pay when they are ready.

For most freelancers, email is the preferred channel for payment follow-up. It creates a written record, gives clients flexibility to respond, and avoids the discomfort of an AI calling someone you work with about money.

Feature comparison

Pricing verified from public pricing pages as of July 2026. InvoicifyAI pricing shown in approximate USD.

When to choose InvoicifyAI

If you specifically want automated phone calls for collections and your clients are comfortable receiving AI-generated voice calls about payments, InvoicifyAI's approach may work for your situation.

When to choose Dun

If you are a freelancer with ongoing client relationships and prefer professional email communication, Dun is the better fit. Automated phone calls about money can damage client relationships. Email escalation lets you maintain professionalism while still applying consistent pressure on overdue invoices.

Dun is $14.99/mo and free until you get paid. Connect Stripe, QuickBooks, FreshBooks, Xero, or Wave, and let the 7-stage email escalation handle the follow-up.