Is there a newsletter that can contain sweets or gifts that's delivered to your door except form Haribo fan club?

No,

You Get Your Welcome Pack With THE LETTER And Sweets And Gifts

Then In Christmas You Get Sweets And Door Hanger AND A MINI MAG

Then In Easter You Get A Egg Hunt Set And A MINI MAG. Oh And Sweets

Then In Summer Or Auttum You Get 2 Banger Sticks And Sweets And THE MINI MAG

Then Your Birthday You Get A Haribo Pencil Case Set And A BIRTHDAY CARD

Then You Get A Re-Join LETTER Whenever You Joined The Haribo Club!