I will give you 1000 of business email address ,which can help you to marketing your products,promote your brands, submit a proposal to any client through the world wherever you needs to spreed over.
This will help you to-
1.Promote your product
2.promote your brand
3.submit any proposal
4.Contact with different clients
5. Contract with different Company and
6,That above all will enable you for a proper marketing.
At the end you can say that, this service really will help you to ensure your proper marketing.