New Warrior here.

I'm looking to do a joint venture with a few online companies in a particular niche.

I've found the corporate addresses on many of the websites but can't find the contact person.

I've sent out a few of the following email to get the person's name without good results.

Should I change something about it?

Thanks.
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Subject: Business Idea for CompanyName

I'd like to share a marketing idea that could increase the profit of CompanyName by 30%.

I'm going to send a letter with my idea to the corporate office at:

123 Main Street
City, State Zip

Please let me know the name of the person at your company who is in charge of growing the business.

Thanks
My Name