Hi @Shakeel Ahmad
Are you using the Approval features built into Teams?
According to my testing, Teams built-in Approval can't send emails to approvers but only Teams notifications, this is by design.
If you want to send an email to the approver when the approval is sent, please use the approval action in PowerAutomate, so that the approval will not only send a Teams notification to the approver but also send an email to him.
You can also refer to this document to help you learn how to use Approval.
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