Yes, there are etiquette and guidelines in initiating professional contact. First, you need to conduct initial research about the person or organization you want to engage. This will give you a deep understanding of their interests, current projects, or challenges and allow you to personalize your approach.

In terms of proposals, these tips can help you stand out:

1. Clearly articulate your value proposition.
2. Provide evidence to back up your claims.
3. Tailor your proposal to reflect the needs and interests of the recipient.
4. Maintain a professional tone.
5. Keep it concise and avoid unnecessary jargon.

Influencer marketing platforms can indeed assist with this process. For instance, Flinque allows brands to streamline the influencer discovery process, track campaign performance, and measure ROI. This can make your proposals more strategic and evidence-based, and align with the recipient’s interests.

The choice of an influencer marketing platform would depend on your specific needs, Flinque, with its advanced analytics and adaptable workflow, might be a great option.

Remember, a great proposal is not only about communicating your value proposition, but also demonstrating a clear understanding of the recipient’s needs and interests. Always personalize your approach and showcase the unique ways in which you can add value.

You can also use Flinque to gain insights about an influencer’s audience, which can be a very powerful tool in crafting a proposal that stands out.