Before proposing a Joint Venture with someone, study the company and learn what they can bring to the table. Find out if they offer a newsletter, if so, join their list and learn more about their products and decide if they will be a fit for your project. If it is a fit, create a proposal that creates a win-win situation that they will find attractive and make your first contact.
If you would like to approach another company for a Joint Venture proposal you will make a better impression if you contact them by phone at first. This has a two fold advantage. First of all it will show them your level of sincerity and it will also prevent your request from being stuck in their email spam folder for weeks and missing out on the opportunity to share your vision with them.
Once you have established contact with your prospective J.V. partner, you will want to share with them a copy of your product and a copy of your proposal. This will let your prospective partners know what you are expecting from them and what you are offering in return. This will open a negotiation dialogue that will ultimately determine if a Joint Venture will be viable.
If for some reason you are not able to come to an agreement on your first try remember that how you handle rejection may affect how well you will be received at a later time with a different project. Maintain a great attitude no matter what.
Remember that communication is a key factor in any business venture so you will want to be very clear about the terms of the Joint Venture before you actually begin the process. This will eliminate any confusion and help you build a strong business relationship for the future.