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Simple payment reminders that just work.

Collie is the self-serve way to send payment reminders, built by Collectmaxx. Upload your invoices and let Collie do the follow-up for you.

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Automated Invoice Recovery

Following up on overdue invoices shouldn’t take over your day.

A smarter platform that sends the right reminder, on the right channel, at the right time, so more invoices get paid.

  • Collie adapts each reminder to how your customer responds, so more invoices get paid.

  • Reminders go out automatically across voice, SMS, email, and payment links.

  • A live dashboard shows what's been paid and what's still open, updated in real time.

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How it works

Up and running in three simple steps.

No setup, no schedules to build. Collie takes it from upload to paid.

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Upload your outstanding invoices

Drop in an Excel/CSV file. Collie checks it for missing details before anything goes out.

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Collie sends the reminders

Collie follows up with each customer automatically, choosing the right channel and timing for every reminder.

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Track payments

Watch payments land in real time. The money goes straight to your own account.

The right reminder, on the right channel

Collie reaches each customer where they actually respond, with a way to pay every time.

Natural voice reminders

Automated calls in a natural, professional voice that remind customers to pay, far cheaper than calling each one yourself.

Email reminders

Professional payment reminders styled with your company name and logo, each with a built-in paylink.

SMS reminders

Short, friendly text reminders that reach customers instantly on the channel they actually check, each with a direct payment link.

Paylinks

Every reminder carries a secure payment link, so customers can pay in seconds with a variety of payment methods.

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Be the first to use Collie

Sign up and we'll let you know the moment Collie is ready to start sending your reminders.

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Answers to your top questions

Quick answers about how Collie works and when you can start.

When can I sign up for Collie?

We are on track to launch Collie in July 2026.

What does the sign-up process look like?

We have designed a straightforward sign-up process. To use Collie, you need to create an account with Collie as well as an account with Mollie to process payments.

How do payments work?

Payments are routed via Mollie, so during your sign-up process you can either link your existing Mollie account or create a new one.

Do I need to configure reminder schedules?

No, Collie combines our 20+ years of experience in payment reminders with AI technology to generate the best reminder sequence possible to maximise your invoice recovery.

How do voice reminders work?

Collie send out automated voice reminders, so your customers receive a phone call informing them about the open invoice. This is a very effective channel for payment reminders. Collie uses a local phone number for maximum trust.

How do e-mail reminders work?

Collie sends out payment reminders via e-mail on your behalf. Collie sends payment reminder e-mails from a Collie e-mail address that also includes your company name, i.e. noreply@yourcompany.collie.collectmaxx.io.

How can I track payments?

Inside our portal you find a dashboard that allows you to track payment reminders as well as payments, so you always know which invoices have already been paid.

Have more questions? Reach out to us.

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