Returned or rejected emails: Causes and how to review them
When you send emails from your website or server, some of them may be returned or rejected. This can happen for various reasons, such as an incorrect email address, a spam filter, a full inbox, among others. In this guide, we explain the most common causes of returned or rejected emails and how you can review them.
Common causes of returned or rejected emails:
Incorrect email address:
- One of the most common reasons for returned or rejected emails is an incorrect email address. This can happen if you have misspelled the recipient's email address or if the address is no longer valid.
Spam filter:
- Some email servers have spam filters that may block emails if they consider the content suspicious or if the sender is not in the recipient's contact list.
Full inbox:
- If the recipient's inbox is full, they may not be able to receive new emails until they delete some older emails.
Technical issues:
- Other causes may include technical issues with the recipient's email server or with your email server.
How to review returned or rejected emails:
Review the error message
- When an email is returned or rejected, an error message is usually sent to the sender. This error message can provide information about the cause of the problem, such as an incorrect email address or a spam filter.
- This image shows a returned email, and the error message is due to the domain's SPF, an anti-spam filter: What is SPF?
Verify the email address
- If the cause of the problem is an incorrect email address, verify that you have correctly written the recipient's email address. It is also recommended to check with the recipient whether there has been any change to their email address.
Try a different email:
- If the problem is a spam filter, you may be able to avoid it by sending a different email or changing the email subject. Review the SPF configuration as mentioned above.
Contact the recipient:
- If you cannot determine the cause of the problem, it is recommended to contact the recipient to ask whether they received the email or whether there is any issue with their email server.
In summary, returned or rejected emails can occur for various reasons, such as an incorrect email address, a spam filter, or a full inbox. To review these emails, it is important to check the error message, verify the email address, try a different email, and contact the recipient if necessary.
If you cannot find the issue, you can also contact our technical support service.
For more information, you can contact us.
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