Hi @Rkamath, welcome to the community!
Can you help me understand why you want emails to be forwarded to Outlook? Generally, the best path to set up an automatic response/ acknowledgement of someone joining your list is to create a Welcome Series flow.
That can then send a series of emails, welcoming people to your list, educating them about your brand story, and helping them to understand what your bestselling products are in case they don’t know where to start.
Warmly,
Gabrielle
Klaviyo Champion & Marketing Lead at ebusiness pros