When your emails fail to reach the recipient, it can be frustrating and problematic for both personal and professional communication. This issue can have several causes, ranging from simple configuration errors to more complex problems with your email server or the recipient’s spam filters.
In this article, we explore the most common reasons for email delivery failure and provide step-by-step solutions.
Step 1: check the spam folder
Start by checking the recipient’s spam folder. Sometimes, legitimate emails are mistakenly flagged as spam by the recipient’s spam filter.
Read: How to prevent your emails from being marked as spam
Step 2: check for typos in the email address
A common reason for undelivered emails is a typo in the recipient’s email address. Double-check that you’ve entered the correct email address.
Step 3: are you on a blacklist?
It’s possible that your email address or IP address has been blacklisted. Use online tools like MXToolbox to verify if your address has been blocked. Follow the steps provided on these tools to remove your address from the list if necessary.
Step 4: verify your mail server settings
If your mailbox is not set up correctly on your device (e.g., an incorrect outgoing mail server), this can cause issues when sending emails. Make sure your mailbox is configured correctly.
You will find the correct settings and guides for common e-mail programmes in these guides:
Step 5: is the recipient’s mailbox full?
If the recipient’s mailbox is full, they won’t be able to receive new emails. Contact the recipient to confirm this.
Step 6: sending too many emails?
Have you sent a large number of emails in a short time? You may have exceeded your mailbox’s sending limit.
For sending emails in bulk (e.g. for a newsletter), we therefore always recommend getting your own mail server or using a tool such as Flexmail.
Conclusion
Email delivery issues can be frustrating, but by systematically ruling out potential causes and following the steps above, you can identify and resolve the problem.
Remember that communicating with your email or web hosting provider may be essential, especially for technical issues that are beyond your control.