Collection Email Templates: 8 Scripts for Every Stage of the Collection Cycle

A collection email template is a pre-written message businesses send to customers with overdue invoices to request payment. Good templates cover the full arc from a friendly pre-due reminder to a final notice, with tone and urgency calibrated to how many days past due the invoice is.

What Is a Collection Email Template?

A collection email template is a reusable script your AR team can customize and send at each stage of the payment collection cycle. Instead of writing from scratch every time an invoice ages past due, you maintain a library of messages matched to specific triggers: three days before the due date, on the due date, seven days past due, and so on.

The goal of a collection email is narrow: get the invoice paid, or get a response that tells you why it has not been paid. Templates exist because consistency matters. An informal check-in at day 45 past due signals you are not serious. A precise, professionally worded message at the right time signals the opposite.

Collection emails are distinct from dunning letters, which are formal written notices typically sent via mail and used later in the collection process. Emails are faster, cheaper, and easier to send at scale, making them the default first-line tool for most B2B AR teams.

When to Send Collection Emails

Timing is the single biggest variable in collection email effectiveness. Most companies either send too late or too infrequently. The longer an invoice sits unpaid without contact, the harder it becomes to collect. An invoice that is 30 days past due has roughly a 90% collection rate. At 90 days past due, that drops below 70%.

A reliable collection sequence runs like this: a courtesy reminder 3 days before the due date, a reminder on the due date itself, a first follow-up at 7 days past due, a second follow-up at 14 days, an escalation notice at 30 days, a final notice at 45 days, and a pre-collections warning at 60 or more days past due. Some teams compress this to five touches. Others run nine or ten. What matters is that the sequence is automated, consistent, and escalates in tone as the invoice ages.

8 Collection Email Templates

Template 1: Pre-Due Courtesy Reminder (3 Days Before)

Subject: Invoice [#] Due in 3 Days

Hi [Name], just a quick note that Invoice [#] for $[Amount] is due on [Date]. If you have any questions about the invoice or need to discuss payment timing, just reply to this email. You can pay online here: [Payment Link]. Thanks, [Your Name]

Template 2: Due Date Reminder

Subject: Invoice [#] Is Due Today

Hi [Name], Invoice [#] for $[Amount] is due today. If payment has already been sent, please disregard this message. To pay now: [Payment Link]. If you are experiencing any issues, reply to this email and we will work it out. Thanks, [Your Name]

Template 3: First Follow-Up (7 Days Past Due)

Subject: Invoice [#] - Payment Overdue

Hi [Name], Invoice [#] for $[Amount] was due on [Original Due Date] and we have not received payment yet. Could you let me know the status? If there is a problem with the invoice or something is holding up approval, I want to help sort it out. Reply here or call me at [Phone]. Pay online: [Payment Link]. Thanks, [Your Name]

Template 4: Second Follow-Up (14 Days Past Due)

Subject: Following Up: Invoice [#] - 14 Days Overdue

Hi [Name], I am following up again on Invoice [#] for $[Amount], now 14 days past due. We have not received payment or a response to our last message. Please confirm when we can expect payment, or let me know if there is an issue I can help resolve. Pay now: [Payment Link]. [Your Name], [Your Title]

Template 5: Escalation Notice (30 Days Past Due)

Subject: OVERDUE: Invoice [#] - Immediate Response Required

Hi [Name], Invoice [#] for $[Amount] is now 30 days past due. This is our third attempt to reach you regarding this balance. We need payment or a confirmed payment plan within 5 business days. If we do not hear from you by that date, we will escalate this to our collections process and place your account on credit hold. To avoid that, please reply to this email or pay here: [Payment Link]. [Your Name], [Your Title]

Template 6: Final Notice (45 Days Past Due)

Subject: Final Notice: Invoice [#] - Account at Risk

Hi [Name], this is a final notice regarding Invoice [#] for $[Amount], now 45 days overdue. Unless we receive full payment or a signed payment agreement by [Specific Date], we will place your account on immediate credit hold, refer the balance to our collections department, and report the delinquency to commercial credit bureaus. Please call me at [Phone] or reply to this email today. [Your Name], [Your Title], [Company]

Template 7: Pre-Collections Warning (60 Days Past Due)

Subject: Account [Company Name] - Pre-Collections Notice

Dear [Name], Invoice [#] for $[Amount] is now 60 days past due. We have made six prior attempts to contact you regarding this balance. Absent payment or a response by [Date], this account will be referred to our third-party collections agency, and additional fees and credit reporting may apply. To prevent collections referral, contact us at [Phone] or [Email] by [Date]. Sincerely, [Your Name], [Title, Company]

Template 8: Collections Referral Notice (90+ Days)

Subject: Account [Company] - Collections Referral Notice

Dear [Name], this letter confirms that Invoice [#] for $[Amount], outstanding for [X] days, has been referred to [Collections Agency Name] for recovery. Please direct all future communications regarding this balance to [Collections Contact]. We will no longer be accepting payments directly for this invoice. Sincerely, [Your Name], [Title, Company]

What Makes a Collection Email Work

Most collection emails fail for one of three reasons: they are vague, they escalate too slowly, or they do not make it easy to pay.

Be specific about the invoice. Include the invoice number, amount, and due date in every message. Customers with hundreds of incoming invoices cannot act on vague references to an outstanding balance. They need enough information to find the invoice and route it for payment without emailing you back.

Make paying frictionless. Every email above includes a payment link. If your payment process requires logging into a portal, calling an AP line, or mailing a check, you are adding friction that delays payment. The closer you get payment to a single click, the faster you will get paid.

Escalate the sender, not just the tone. One of the most effective levers in collections is changing who the email comes from. A follow-up from your AR specialist carries less weight than one from your CFO or a senior account executive. Around the 30-day mark, consider routing the escalation notice through a more senior sender.

Give a deadline for action. Templates 5, 6, and 7 all include a specific date by which the customer must respond. Open-ended requests get deprioritized. A date forces a decision.

Automating Your Collection Email Sequence

Running this sequence manually is feasible for a team with a small customer base. It stops being feasible once you are managing more than 50 to 100 open invoices. At that scale, you need automation.

Most AR platforms let you configure trigger-based sequences: when invoice X is Y days past due, send template Z. If you are not using AR automation yet, the minimum viable setup is a spreadsheet or CRM workflow that flags overdue invoices by aging bucket and queues the corresponding template.

Related: How to Write a Dunning Letter That Gets Paid

Collection Email FAQs

What is the difference between a collection email and a dunning letter?

Collection emails are sent digitally and used throughout the early-to-mid stages of the collection cycle. Dunning letters are formal written notices, often sent via certified mail, used at later stages or when you need a paper trail for legal proceedings. Most B2B AR processes use both: emails first, letters when escalation is required.

How many collection emails should I send before escalating?

Most AR teams send between four and six emails before escalating to formal collections or a credit hold. The exact number depends on the relationship, invoice size, and customer payment history.

What is the best subject line for a collection email?

Be direct and specific. A subject like "Invoice 1042 - Payment Overdue" works better than "Quick question" or "Following up." As invoices age, adding urgency markers increases open rates. Avoid subject lines that can be mistaken for spam.

Should I include a payment link in every collection email?

Yes. Removing friction from the payment process is one of the highest-leverage things you can do to improve collection rates. Every email in your sequence should give the customer a direct path to pay. If your invoicing system does not support payment links, include clear wire transfer or ACH instructions as a fallback.

When should I stop sending collection emails and refer to collections?

Most businesses draw the line between 60 and 90 days past due, after four to seven contact attempts with no payment or response. At some point, continued internal effort costs more than a collections agency fee. Once you have sent a formal final notice and received no reply, referring to collections is the right call.