A collections email sequence for every step and every reply

Ad hoc chasing is easy when you have five invoices.

It gets harder when you have 50.

One invoice gets chased twice. Another gets forgotten. Somebody promises to pay Friday, but nobody follows up the following Monday. A customer asks for a PO, the email is forwarded internally, and the invoice sits untouched for another three weeks.

A repeatable AR collections process gives every unpaid invoice a next action.

It should tell you:

• When to contact the customer.
• What you are trying to achieve.
• What happened last time.
• Whether the customer made a payment promise.
• Whether something is blocking payment.
• What needs to happen next.

The emails are only part of that process.

Here is a simple starting sequence for B2B invoices.

Your exact timings can vary.

The important part is that each stage moves the invoice forward.

The first email does not need to sound like collections at all.

Its job is to catch simple problems before the invoice becomes overdue.

Subject: Invoice [Invoice number] due [Due date]

Hi [Customer name],

Just a quick reminder that invoice [Invoice number] for [Amount] is due on [Due date].

I've attached the invoice here for reference.

Please let me know if you need anything from our side before payment is processed.

Thanks,

[Your name]

For more early-stage wording, see our payment reminder email templates.

Keep this short.

Subject: Invoice [Invoice number] due today

Hi [Customer name],

A quick reminder that invoice [Invoice number] for [Amount] is due today.

I've attached a copy here for reference.

Please let me know if there are any questions.

Thanks,

[Your name]

Now ask whether something is holding payment up.

Subject: Payment reminder: invoice [Invoice number]

Hi [Customer name],

I'm following up on invoice [Invoice number] for [Amount], which was due on [Due date].

Could you confirm when payment is scheduled?

If there's anything holding it up, let me know and I'll help get it resolved.

Thanks,

[Your name]

This is where the sequence starts to branch.

If the customer replies, do not automatically send the seven-day reminder next.

Deal with what they said.

If there has been no useful response, ask for a firm payment date.

Subject: Payment date for invoice [Invoice number]

Hi [Customer name],

Invoice [Invoice number] for [Amount] is now overdue.

Please could you confirm the date payment will be made?

If there is an issue preventing payment, let me know what is needed from our side.

Thanks,

[Your name]

By now, you should be trying to get ownership of the issue.

Subject: Overdue invoice [Invoice number]

Hi [Customer name],

I'm following up again regarding invoice [Invoice number] for [Amount], due on [Due date].

Please confirm when payment will be made, or let me know who I should speak with to get this resolved.

If something is blocking payment, please send me the details and I'll make sure it reaches the right person.

Thanks,

[Your name]

If the invoice is still unpaid, consider whether another person should be involved.

That might be accounts payable, finance or a more senior contact.

Subject: Invoice [Invoice number] now 30 days overdue

Hi [Customer name],

Invoice [Invoice number] for [Amount] remains unpaid and is now 30 days overdue.

Please confirm when payment will be made.

If you are not the right person to resolve this, could you point me to the person who is?

Thanks,

[Your name]

For a deeper escalation ladder, see our past due invoice email templates.

A final notice should be factual.

No drama. No threats you are not prepared to follow through on.

Subject: Final notice: invoice [Invoice number]

Hi [Customer name],

This is a final notice regarding invoice [Invoice number] for [Amount], which was due on [Due date] and remains unpaid.

Please arrange payment or contact me by [Date] to confirm how the balance will be resolved.

If there is an issue with the invoice that has not yet been raised, please let me know.

If we do not hear from you by [Date], we will review the next steps available to us for recovering the outstanding amount.

Regards,

[Your name]

Our guide to collecting unpaid invoices covers what to consider if normal collections activity has run its course.

This is the part most collections sequences miss.

The customer has replied. Great.

Now what?

Reply: "We'll pay on Friday"

Do not just say "Thanks."

Confirm the promise in writing.

Hi [Customer name],

Thanks for confirming.

I've noted payment of [Amount] for Friday, [Date].

I'll check back if we haven't received it after then.

Thanks,

[Your name]

Then record the date.

If Friday passes without payment, follow up.

Hi [Customer name],

We had payment of [Amount] scheduled for [Date], but I can't see it received yet.

Could you confirm the updated payment date?

Thanks,

[Your name]

A payment promise should always create a next action.

Reply: "We need a PO number"

Stop the normal sequence.

Get the PO.

Then resend the invoice.

Hi [Customer name],

Thanks for letting me know.

I've updated invoice [Invoice number] with the PO number and attached the revised copy here.

Could you confirm this now has everything needed for payment?

Thanks,

[Your name]

Sending another overdue reminder while the invoice is still missing required information does not help.

Reply: "Send it to accounts payable"

Get the right details and redirect the invoice.

Hi [Customer name],

Thanks.

Could you send me the correct accounts payable contact or email address?

I'll resend invoice [Invoice number] directly to them.

Thanks,

[Your name]

Once you have the contact:

Hi [Accounts payable contact],

[Customer name] asked me to send invoice [Invoice number] for [Amount] directly to you.

I've attached the invoice here. It was originally due on [Due date].

Could you confirm when payment is scheduled?

Thanks,

[Your name]

Reply: "We never received the invoice"

Make it easy.

Do not argue about whether you sent it.

Hi [Customer name],

No problem.

I've attached invoice [Invoice number] again here. The amount is [Amount] and the original due date was [Due date].

Could you confirm you've received it and let me know when payment is expected?

Thanks,

[Your name]

The goal is to get paid, not prove that your sent folder is correct.

Reply: "There's a problem with the invoice"

Pause the collection sequence.

Find out exactly what is disputed.

Hi [Customer name],

Thanks for flagging this.

Could you let me know exactly what looks incorrect or what you would like us to review?

I'll get it to the right person on our side and come back to you.

Thanks,

[Your name]

Once a genuine invoice dispute has been raised, continuing to send standard dunning emails can make the situation worse.

Resolve the issue first.

Then confirm what is payable and when.

Reply: "We're having cash flow problems"

This is no longer a normal reminder problem.

You need a realistic commitment.

Hi [Customer name],

Thanks for being open about that.

What amount can you realistically pay now, and what schedule could you commit to for the remaining balance?

If you send me the dates and amounts you can manage, we can review the options.

Thanks,

[Your name]

You do not have to accept the proposed plan.

But a specific plan is more useful than another vague promise to "sort it soon."

If you agree a schedule, record every payment amount and date.

Reply: "It's already been paid"

Check before chasing again.

Hi [Customer name],

Thanks for letting me know.

Could you send me the payment date and any remittance details or payment reference?

I'll check it against our records.

Thanks,

[Your name]

If the payment is there, stop the sequence.

If you cannot find it, go back with the specific information you checked rather than sending another generic reminder.

Reply: no reply at all

Silence needs its own path.

First, check the basics.

• Is the email address correct?
• Is the person still at the company?
• Is there an accounts payable address?
• Do you have another legitimate contact?
• Has the customer responded on an older email thread?

Then escalate gradually.

A simple message could be:

Hi [Customer name],

I'm following up again regarding invoice [Invoice number] for [Amount], due on [Due date].

I've not heard back to my previous emails.

Please could you confirm who I should speak with about payment, or when the invoice will be paid?

Thanks,

[Your name]

If repeated emails go unanswered, continuing to send the same message indefinitely is not a strategy.

Decide when the invoice should move to a more formal stage.

The templates matter less than the rules behind them.

Stop when the invoice is paid

Obvious, but important.

Once payment is confirmed, the customer should not receive another overdue reminder.

Pause during a dispute

A disputed invoice needs resolving.

Do not keep sending standard reminders while someone on your team is still investigating it.

Keep the conversation together

Where practical, keep replies in the same email thread.

It makes the history easier for both sides to follow.

Record every payment promise

"Friday" should become an actual date in your system.

Then somebody needs to check whether payment arrived.

Record the blocker

If the invoice cannot be paid because of a missing PO, wrong contact or invoice query, record that.

"Overdue" is a status.

"Waiting for PO 48172 from procurement" tells you what needs to happen.

Escalate sensitive cases to a person

Not every collections decision should be automatic.

A major dispute, important customer relationship or unusual situation may need judgment from somebody in your business.

At minimum:

• Invoice number.
• Amount outstanding.
• Due date.
• Last contact date.
• Last customer response.
• Current blocker.
• Promised payment date.
• Next action.
• Next action date.
• Whether the invoice is disputed.
• Who owns the next step.

This is what stops collections becoming a pile of email threads and sticky notes.

A manual collections sequence can work when invoice volume is low.

The problem is consistency.

Someone has to remember which invoice needs a follow-up, what the customer said last time and whether a promised payment date has passed.

Basic automated payment reminders solve part of that by sending scheduled emails.

But collections does not follow a straight line.

A customer reply changes what should happen next.

A promise to pay needs tracking.

A missing PO creates a task.

A dispute should pause normal chasing.

A wrong contact needs replacing.

That is the difference between automating reminders and automating more of the actual accounts receivable collections work.

You can see how The AR Agent works.