I think that age is not a factor for the getting rich but if you are lucky and you render your services as a good entrepreneur than there are much chances for becoming the millionaire and devote your all efforts to the business.

Email marketing is very much essential for the promotion of the business here are some of the benefits of email marketing
1 fast responses
2 It increases your sales
3 Increase your average order value.
4 Gain Valuable Feedback from Your Visitors.

Hey guys
I also agree with you that soap making is a good business and it do not require too much over heads and can be start with the little investment but keep it in mind that it is highly competitive and the markets leaders who are also running this business can not be defeated just making of a soap but there is a need of the strategic plans.