How to check mail sent mail as failed

There are a few ways to check if an email sent via a mail server has failed:

Method 1: Check the mail server logs

  1. Access the mail server's logs, which are usually stored in a file or database.
  2. Look for entries related to the email that was sent. The log entry should indicate whether the email was delivered successfully or not.
  3. Check the log entry for any error messages or codes that may indicate why the email failed.

Method 2: Use a mail client's built-in features

  1. If you used a mail client (e.g., Outlook, Thunderbird) to send the email, you can check its built-in features to see if the email was delivered successfully.
  2. In Outlook, for example, you can go to the "Sent Items" folder and look for the email in question. If it's not there, it may have failed to send.
  3. In Thunderbird, you can go to the "Sent" folder and look for the email. If it's not there, you can check the "Error" folder to see if there are any error messages related to the failed email.

Method 3: Use a third-party email tracking service

  1. There are many third-party email tracking services available that can help you track the delivery status of your emails.
  2. These services typically provide a unique tracking code that you can add to your email signature or body.
  3. When the email is sent, the tracking service will monitor its delivery status and provide you with updates on whether it was delivered successfully or not.

Method 4: Use a mail server's API or web interface

  1. If you have access to the mail server's API or web interface, you can use it to check the delivery status of the email.
  2. For example, you can use the mail server's API to query the delivery status of the email, or use the web interface to check the email's status in the "Sent" folder.

Some common error codes that may indicate a failed email include:

Keep in mind that the specific error codes and methods for checking email delivery status may vary depending on the mail server and email client you're using.