The short answer
- Reminder tools send scheduled emails and stop there. Cheap, but the work — replies, cash application, judgment — stays with you.
- An AI collections agent works the whole queue across channels, applies cash, and escalates only edge cases. Best for ongoing, in-house AR.
- A collections agency takes over distressed debt for 15–50% of recovery, often at the cost of the relationship. Best as a last resort.
- Most teams: an AI agent for current receivables, an agency only for severely delinquent accounts.
At a glance
| Reminder tool | AI agent | Agency | |
|---|---|---|---|
| Works the whole queue | Sends, doesn’t work | Yes | Yes (their staff) |
| Reads & acts on replies | No | Yes | Yes |
| Multi-channel (email/WhatsApp/voice) | Usually email only | Yes | Phone-led |
| Cash application | No | Yes | No |
| Keeps your brand voice | Yes | Yes | Third-party |
| Cost model | Subscription | Subscription | 15–50% of recovery |
| Best for | Light, low-volume AR | Ongoing, in-house AR | Last-resort recovery |
Reminder & dunning tools
These automate the dunning cadence: scheduled emails that go out as an invoice ages. They’re inexpensive and better than nothing, but they stop at the send. Replies pile up unread, cash application is still your job, and there’s no judgment — they’ll email a customer who paid last week. Good for small books with light volume.
The AI collections agent
An autonomous AI agent is the newest category. Instead of sending and stopping, it works the queue: follows up across email, WhatsApp, and voice, reads replies and adapts, prioritizes by exposure, applies cash to the right invoices, and brings a human in only on the edge cases. You keep your brand voice and full control, set in plain language, at software cost. Best for teams that want to collect their ongoing receivables without growing headcount.
The collections agency
An agency hands distressed debt to a third party who chases it for a cut of whatever they recover — typically 15–50%. It can recover money you’d otherwise write off, but it’s expensive, it’s late-stage, and it puts a stranger’s voice in front of your customer. Reserve it for severely delinquent accounts you’ve already worked.
How to choose
- Light, occasional AR? A reminder tool may be enough.
- Real volume you want collected in-house? An AI agent does the work and keeps the relationship.
- Already-distressed, written-down debt? An agency, as a last resort.
See the agent approach on your book
Welldun is an autonomous AI agent for accounts receivable — multi-channel collections plus cash application, controlled in plain language.
Book a demo