Received Strenge Mail in my Admin mail id

I have recevied this kind of mail in my Admin mail id

Hi Admin,

Email has been sent successfully to 2 email(s). Please find the details below:

Unique ID:****************
Start Time: 2020-02-26 9:16:26
End Time: 2020-02-26 9:16:26

New Subscriber Information:
Name : {{NAME}}
Email: {{EMAIL}}
Group: {{GROUP}}
For more information, login to your dashboard and go to Reports menu in Email Subscribers.
Thank You.