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Why is my mail client downloading duplicated emails

If your POP3 email client (Outlook, Thunderbird, etc) is downloading duplicated emails, you may refer to the following steps to troubleshoot:

1. Check Email Configurations

Double-check your email account settings in Outlook/Thunderbird to ensure they are correctly configured. Follow through the links below to check your settings:

2. Network Interruptions

Sometimes, network interruptions during email download can cause Outlook/Thunderbird to receive duplicate copies of emails. This can occur if the connection drops or if there are delays in communication between Outlook/Thunderbird and the mail server.

Try changing your connection to another ISP (e.g. your mobile broadband), or restart your Internet modem/router to resolve the issue.

3. Antivirus or Firewall Settings

Overly aggressive antivirus or firewall settings can interfere with email send/receive and lead to duplicate downloads. Temporarily disable antivirus software or adjust the settings to allow Outlook/Thunderbird to communicate properly with the mail server.

4. Software or Add-on Conflict

Check if any installed Outlook/Thunderbird add-ons or extensions are conflicting with the email download process. Temporarily disable any add-ons or extensions and see if the duplicate email issue persists. If the problem resolves after disabling them, consider updating or removing the conflicting add-on.

faq/email/why_mail_client_download_duplicated_emails.txt · Last modified: 2023/05/29 15:31 by vikki