Payment failure email samples with best practices

A payment failure can happen in seconds. A card expires, a bank declines a transaction, a customer reaches a spending limit, or a temporary processing issue gets in the way. What happens next can determine whether the customer completes the payment or leaves in a panic.

A well-written payment failure email gives customers a clear path forward without making them feel anxious. The key isn’t simply to tell customers that their payment failed. It’s to tell them what happened, what they need to do, and what happens if they do nothing.

In this article, we’ll learn everything you need to build, sequence, write, and send payment failure emails.

What is a payment failure email?

A payment failure email is an automated transactional email sent when a customer’s payment attempt is unsuccessful.

This email is triggered during a one-time purchase, invoice payment, subscription renewal, or another billing event. Depending on the situation, the email may ask the customer to retry the payment, update their payment method, complete additional authentication, or contact their bank.

A useful payment failure email answers three questions:

• What happened? The payment could not be completed.

• What should I do? Retry the payment or update the payment method.

• What happens next? Explain the next retry or any possible service interruption.

When should you send a payment failure email?

Send the first email as soon as your payment system confirms that a transaction has failed.

For a one-time purchase, this could be immediately after the failed checkout attempt. For subscriptions, you can send the first notification after the renewal payment fails and follow it with additional payment reminder emails if the payment remains unresolved.

However, don’t treat every payment failure identically. Some payment failures are temporary and recoverable, while others require the customer to replace their payment method.

Why does a payment fail?

A payment failure can happen for several reasons. Here are some of the most common ones.

1. Insufficient funds  

The customer’s account may not have enough available funds to complete the transaction. This can sometimes be a temporary problem, which is why retrying later may work.

2. An expired or replaced card  

A stored card may have expired or been replaced. In recurring billing, outdated card details are a common source of avoidable payment failures.

3. Bank or issuer decline  

The customer’s bank may decline a transaction because of fraud concerns, credit limits, insufficient funds, or other authorization issues.

4. Incorrect payment details  

An incorrect card number, expiration date, billing information, or verification value can prevent authorization.

5. Authentication failure  

Some transactions require additional customer authentication. If the authentication isn’t completed successfully, the payment may fail.

6. Temporary processing or technical issues  

A payment can also fail because of a temporary problem with the payment processor, bank, network, or merchant’s payment system.

What to include in a payment failure email?

A good payment failure email should contain enough information to help the customer resolve the issue without making them search through their account. You should always include these elements.

1. A clear subject line

Make sure the subject line clearly communicates the exact reason for the payment failure in simple, easy-to-understand language.

Example:
Your payment for Zylkerbank couldn’t be processed.

2. A brief explanation

Clearly explain why the payment couldn’t be completed, using simple language that customers can easily understand.

Example: Your payment of $49 for your Zylker Pro subscription couldn’t be completed because your card was declined.

3. Relevant transaction details

Avoid including sensitive payment information such as the full card number or CVV. Depending on your business, include the:

• Amount to be paid

• Invoice or order number

• Payment date

• Product or subscription name

• Payment method

4. A prominent CTA

The fewer steps between the email and payment recovery, the better. Give customers one clear next step, and make your payment failure email CTA both action-oriented and navigational, so they know exactly what to do and where the button will take them.

Examples include:

• Retry payment

• Update payment method

• Complete payment

• Review billing details

• Try alternate payment method

5. Tell customers what happens next

If your system will automatically retry the payment, let customers know when the next attempt will happen. This gives them clarity and an opportunity to take action before then.

Example: We’ll retry your payment on {{date}}. Update your payment method now to make sure your payment goes through without any interruption.

6. Add the consequences, when relevant

If continued failure will suspend an account, cancel an order, or interrupt access, explain this clearly. Don’t use unnecessary fear or urgency. The purpose is to help the customer resolve the issue, not pressure them.

7. Support information

Give customers an alternative if they cannot resolve the problem themselves.

Example: Having trouble? Contact our billing team at support@example.com.

Best practices for crafting a payment failure email

1. Focus on the solution, not the failure

“Your payment failed” is technically accurate, but it doesn’t tell the customer what to do. Now compare these two sentences:

“Your payment failed.” (Less helpful)

“We couldn’t process your latest payment. Update your payment method and retry payment.” (More helpful)

The second version immediately moves the customer toward a solution and this is how your entire email should be. It should solve the customer’s problem, not overwhelm them.

2. Don’t blame the customer

Payment failures can occur for reasons outside the customer’s control. Use neutral and non-judgmental tone and language such as:

• “We couldn’t process your payment.”

• “Your latest payment wasn’t completed.”

• “We weren’t able to charge your payment method.”

Avoid sentences like:

• “You entered the wrong details.”

• “You failed to pay.”

• “Your card is invalid.”

3. Make the email easy to scan

Customers should be able to understand the situation within a few seconds. Use short paragraphs, clear headings, and a prominent CTA. Avoid filling the email with unnecessary information or multiple competing buttons. Keep the most important information above the fold: Payment failed → Why it failed → What to do → What happens next

4. Give customers one clear next step

The fewer steps between the email and payment recovery, the better. Place the primary CTA above the fold and make it visually prominent. Include secondary navigation only when necessary. 

For example: Use “Update your payment method” rather than, “Click here to go to your account and update your payment method.”

5. Personalize the useful details

Personalization doesn’t have to mean inserting the customer’s first name everywhere. Useful personalization for payment failure email includes the:

• Invoice number

• Amount due

• Subscription name

• Last four digits of the payment method

• Payment date

• Date of the next retry

• Account-specific payment link

6. Don’t expose unnecessary technical details

Customers generally don’t need processor response codes or internal error messages. The technical failure reason should remain available to your internal systems and support team only.

Instead of showing technical jargons like “Error code: processor response 05”, say “Your bank declined the payment. Please try another payment method or contact your bank for assistance.”

7. Match the message to the reason for failure

A generic message isn’t always the most useful one. If you know why the payment failed, tailor the email accordingly.

For example:

• Expired card: “Your card has expired. Please update your payment method.”

• Insufficient balance: “Your payment couldn’t be completed due to insufficient funds.”

• Incorrect details: “Please check your payment details and try again.”

• Temporary network issue: “We couldn’t complete your payment due to a temporary processing issue.”

This helps customers take the right action without unnecessary troubleshooting.

8. Make it mobile-friendly

Many customers will open transactional emails on their phones. Use a responsive layout, the ideal email template size, readable text, sufficient spacing, and buttons that are easy to tap. Also make sure the email remains understandable if images don’t load.

Payment failure email templates

Here are payment failure email template examples with subject line ideas for different scenarios that may cause a payment to fail.

1. General payment failure email

Subject line: We couldn’t process your payment!

Hi {{Customer Name}}, 

We couldn’t process your payment of ${{Amount}} for {{Product/Service}}. 

To complete your payment and avoid any interruption to your order or subscription, please update your payment details or try again. 

{{Complete Payment}} 

If you’ve already completed the payment, you can ignore this email. 

Need help? Contact us at {{Support Email}}. 

Team {{Company Name}}

2. Credit card declined payment failure email

Subject line: Payment unsuccessful: Your {{Card Name}} was declined!

Hi {{Customer Name}}, 

Your credit card ending in {{XXXX}} was declined while processing your payment for {{Product Name}}. 

Please try the payment again or use a different card. 

{{Try payment again}} 

If the issue persists, your bank may be able to provide more information. 

Team {{Company Name}}

3. Payment failure due to incorrect payment details

Subject line: Payment failed due to incorrect payment details!

Hi {{Customer Name}}, 

We couldn’t process your latest payment of ${{amount}} because some of the payment details on file (such as the billing address, CVV, or card number) didn’t match your bank’s records. 

Please review and re-enter your correct payment credentials and retry the payment so you don’t experience any interruption in service. 

{{Retry Payment}} 

Best regards,   

Team {{Company Name}} 

4. Payment declined due to insufficient balance

Subject line: Payment attempt failed!

Hi {{Customer Name}}, 

We weren’t able to process your payment of ${{amount}} due to an insufficient available balance on your payment card.  

You can retry the payment after adding funds, or use another payment method. 

{{Choose an alternative payment method}} 

Team {{Company Name}}  

5. Payment failed due to network error

Subject line: Payment failed! There’s a temporary issue with your payment

Hi {{Customer Name}}, 

Your payment couldn’t be completed because of a temporary network or processing issue. 

No amount has been charged.  

Please try again in a few minutes using the button below. 

{{Retry Payment}} 

We apologize for the inconvenience. 

If the problem continues, please contact our support team at {{support @abc.com}}. 

Team {{Company Name}}  

6. Payment failure due to card expiry

Subject line: Payment failed! Your card has expired

Hi {{Customer Name}}, 

We couldn’t process your payment because the card linked to your account has expired. 

Please update your payment method with your current card details to complete your payment. 

{{Update Payment Method}} 

Once updated, you can retry your payment immediately. 

Need help? Contact us at {{Support Email}}. 

Regards, 
Team {{Company Name}}

7. Payment failure due to cancellation of auto-pay

Subject line: Your payment couldn’t be processed!

Hi {{Customer Name}} 

We couldn’t process your payment of ${{amount}} because your automatic payment authorization has been cancelled. 

Please re-enable auto-pay or choose another payment method to complete your payment and avoid any interruption to {{Product Name}}. 

{{Update Payment Method}} 

If you’ve already completed the payment, you can ignore this email. 

Team {{Company Name}}  

How to send payment failure emails from ZeptoMail

Payment failure emails can be sent through any email service provider. So, why choose ZeptoMail? It’s built specifically for transactional emails, rather than bulk promotional campaigns. It uses a dedicated infrastructure for sending transactional messages such as payment failure notifications, invoices, order confirmations, and account alerts.

With ZeptoMail, you can connect your application using SMTP or an email API, allowing your application to trigger payment failure emails automatically when a transaction fails.

A typical flow looks like this:

When your payment system reports a failed transaction, your application or website can trigger the appropriate payment failure email template through ZeptoMail.

For example:

1. Your payment provider reports that a payment failed.

2. Your application identifies the customer and failure status.

3. Your application selects the relevant payment failure template.

4. Customer-specific information is inserted into the template.

5. ZeptoMail sends the transactional email.

6. Your application updates the workflow when the payment succeeds.

ZeptoMail’s email sending API supports transactional emails and allows you to pass dynamic values through merge information. This can be used for details such as the customer’s name, payment amount, invoice number, and other transaction-specific information.

You can also create reusable email templates in ZeptoMail and send them through the Templates API. This keeps your email content and design separate from your application’s payment logic, making templates easier to manage and update.

Don’t want to code your templates from scratch? ZeptoMail provides both HTML and plain-text editors, so you can create transactional email templates based on your technical expertise and use case.  

FAQ

1. Is a payment failure email a transactional or marketing email?

A payment failure email is a transactional email because it’s triggered by a specific action taken by the customer. In this case, it’s after initiating a payment on an application or website. When the payment fails, the email is automatically sent to notify the customer about the transaction and guide them on what to do next.

2. Is it possible to automate payment failure emails?

Yes. You can automate payment failure emails using a transactional email service like ZeptoMail. Your payment system can trigger an email automatically whenever a payment fails, allowing you to notify customers immediately without any manual intervention.

3. Should a payment failure email be plain text or HTML?

Both HTML and plain-text formats can be useful. HTML emails allow you to create a structured, branded experience with buttons, payment details, and clear CTAs. However, it’s good practice to have a plain-text fallback in case the HTML version doesn’t render properly in a customer’s email client. This ensures that customers can still access and read the essential information.