Top 8+ Most Common Reasons for NDR in eCommerce and How to Solve them

vijay kumar
4 min readDec 16, 2022

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NDRs (Not Delivered Reports) can happen for a variety of reasons, but the most common reason is an incorrect or incomplete shipping address. If you run an online store, it’s likely that you’ve encountered a Non-Delivery Report (NDR) at some point. These reports can be caused by a variety of issues, all of which need to be solved in order to get your eCommerce business back on track. In this article, we’ll outline the most common reasons for NDRs and how to do NDR Management. Let’s get started!

Reasons for NDR in eCommerce

1. Invalid email addresses — Reason for NDR (Non-Delivery Report) in eCommerce

Invalid email addresses are one of the most common reasons for NDRs (Non-Delivery Reports) in eCommerce. When a customer enters their email address into an online form, the system may not be able to verify that the address is valid. This can happen for a number of reasons, such as mistyping the domain name or using a non-existent domain.

As a result, the email is returned to the sender as undeliverable. Invalid email addresses can also be caused by typos in the recipient’s address, or by using an outdated list of addresses. In either case, it is important to ensure that your email list is up-to-date and accurate to avoid NDRs.

2. Incomplete or incorrect recipient information — Reason for NDR (Non-Delivery Report) in eCommerce

One of the most common reasons for an eCommerce order to result in an NDR is incomplete or incorrect recipient information. This can happen when a customer fails to provide a complete address, omits key information such as their apartment number or zip code, or provides an incorrect email address.

In some cases, the customer may enter the wrong shipping address altogether. To avoid this issue, it’s important to double-check all customer information before finalizing the purchase. If you’re unsure about any of the details, contact the customer directly to confirm their shipping information. By taking these simple steps, you can help ensure that your customers receive their orders promptly and without any issues.

3. Email server issues on the sender’s end — Reason for NDR (Non-Delivery Report) in eCommerce

One of the most common reasons for an NDR (Non-Delivery Report) is due to email server issues on the sender’s end. This can happen for a variety of reasons, such as an outdated DNS record, a firewall blocking port 25, or the sender’s IP address being blacklisted. In some cases, the sender may simply have exceeded their sending limit.

If you suspect that email server issues are causing your NDRs, there are a few steps you can take to resolve the issue. First, check with your email service provider to see if they are experiencing any outages or delays.

If not, try whitelisting your domain or IP address with your recipient’s email service provider. Finally, if you continue to experience NDRs, you may need to switch to a different email service provider.

4. Emails blocked by spam filters- Reason for NDR (Non-Delivery Report) in eCommerce

Emails play a key role in eCommerce, both in terms of marketing and transaction-related communication. However, emails can sometimes be blocked by spam filters, resulting in a Non-Delivery Report (NDR). This can be caused by a number of factors, including the content of the email, the sender’s reputation, and the presence of attachments.

In order to ensure that your emails are delivered successfully, it is important to understand how spam filters work and what you can do to avoid getting caught in one. By taking these steps, you can help ensure that your emails reach their intended recipients.

5. Recipient’s mailbox is full- Reason for NDR (Non-Delivery Report) in eCommerce

A mailbox full error typically means that the recipient’s mailbox is full and can’t accept any more messages. This can happen for a number of reasons, including:

-The recipient’s mailbox is over its size limit.

-The recipient has too many messages in their inbox.

-The recipient has too many messages in their Deleted Items folder.

-There is a problem with the recipient’s mail server.

If you get this error when sending an email, you’ll need to contact the recipient and ask them to free up some space in their mailbox. Once they’ve done that, you should be able to resend your email without any problems.

6. Emails caught in a junk mail folder — Reason for NDR (Non-Delivery Report) in eCommerce

An email that is caught in a junk mail folder is usually because of an NDR, or Non-Delivery Report. The most common reason for an NDR is that the recipient’s mailbox is full. Another reason could be that the email contains an attachment that is too large.

But the most likely reason is that the sender’s IP address has been marked as spam by the recipient’s email provider. If you are having trouble with emails being caught in a junk mail folder, make sure to check your IP address and see if it has been blacklisted.

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