Insert image in mail body

Hello Guru's

As I have to insert image/signature in body of email. I can use colored text by clicking html option. But the issue is I am unable to insert image or drag and drop. When I use insert image I am getting like fake path added.

Please find the attachment.

Here my scenario is to collect signature from non sap to sap and vice versa. So please help me out

Thanks in advance.

Regards

Mithuunn Gp