Outlook Sending Duplicate Emails – Stop It Now

Outlook may send duplicate emails if anything goes wrong when you send or sync a message. This usually happens if your internet is slow or your email account is added more than once. There might also be a problem with the mail server or with the Send/Receive settings being incorrect. 

Fixing the “Outlook sending duplicate emails” problem seems to be simple, but there are certain challenges mid-way, like:

• Antivirus software interference
• Misconfigured Outlook rules
• Add-in conflicts
• Cleanup limitations