In the event that an influencer declines a collaboration proposal, there are several strategies that can help continue the outreach process:

1. Rethink the Offer: The first step is to assess why the influencer might have declined the proposal. Could the remuneration be too low? Was the proposal aligned with their brand image and audience interests? In some cases, revisiting and adjusting the terms can open the door for a second chance.

2. Diversify the Influencer Pool: Effective influencer marketing shouldn’t rely on a single influencer. Diversity, in terms of audience size, engagement rates, niche, and influencing style, can boost campaign effectiveness and mitigate risks associated with relying on one influencer.

3. Leverage Influencer Marketing Platforms: Platforms such as Flinque or others can help in discovering other potential influencers who may be more likely to accept your proposal. They can provide a wide range of options, filter by different parameters, and offer functionality for simplifying negotiation and contracting processes.

4. Formalize the Approach: A more formalized approach towards influencer outreach often yields better results. Be clear on what expectations are, what the influencer will receive, and how their involvement aligns with your brand and campaign objectives.

5. Analyze and Learn: Understanding why a proposal was declined will be invaluable for future campaigns. Analyze the outreach process, review your pitch, and take note of any feedback received from the influencer.

Maintaining a positive and professional communication even after a decline can keep doors open for future possibilities. Influencer marketing is an ongoing process, and such rejections should be seen as opportunities for improving future outreach strategies.