You will need to start the company first and show something. No one just invests in something before it has started.
A friend of mine has a courier company and online shop so it is not a unique business. You may find one of your suppliers could be interested but you need to start first.
There are just so many of these types of companies around and it isn't unique. I cannot see an investor investing on a thought. A proper business plan is required done professionally and even then there are no guarantees.
Your best chance is to try family and friends to assist you . Start small and expand slowly and maybe then someone will throw some money at it. Good luck as that is a highly competitive market place.