Issue with email template logo

Hello

I am having trouble changing the email Logo for easydiscuss. I am using Ja_Social_II template and when i try to locate
Ja_Social_II/html/com_easydiscuss/emails I can not find html/com_easydiscuss the file is not there but easydiscuss is showing fine on my site. Can you please help me out in changing this email logo.

Also in easy blog when Email logo is set through Notifications - general - upload email logo. That's all i need to do for easyblog email logo, Right. If it's that easy for easyblog why don't you have the same upload image for easydiscuss?

Thanks Adam