Hi @Ponn Pan ,
Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client and know little about development. In order to better solve your issue, it is suggested for you to post a new thread to the dedicated forum via this link.
According to my search, to log in to Dynamics 365 Sales using outlook email, you need to first install and configure Dynamics 365 App for Outlook. More information you can refer to this document: Set up and configure Dynamics 365 for Outlook from Microsoft 365.
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