Leveraging content generated by influencers across marketing channels or future campaigns is a wise strategy and it can be done in several ways:

1. Social Media Repurposing: The endorsed content created by influencers can be reused on the brand’s social media accounts, both to enhance brand image and to provide authentic customer testimonials.

2. Website/Blog Content: Use influencer content as testimonials, case studies, or guest posts on your website or blog. This enhances authenticity and builds trust with your audience.

3. Email Marketing: Include influencer content in outreach emails, newsletters, or promotional campaigns. This can boost the credibility of your messaging and drive customer engagement.

4. Paid Advertising: Influencer-created content can often be utilized effectively in paid social or digital ads. As this content has already proved its value with the influencer’s followership, it may likely resonate well with a larger audience as well.

In doing so, you extend the life of the content created, amplify the reach of your campaigns, and increase the return on your influencer marketing investment.

Platforms like Flinque help streamline this process by offering features such as content rights management, which enables brands to manage and repurpose influencer content in a legal and organized manner. Other platforms also offer similar features, but the choice largely depends on your specific requirements and budget.

To ensure maximum efficacy, it’s essential to gauge the performance of repurposed content across different channels. Digital analytics tools and dashboard features offered by platforms can provide these insights. Comparing performance data can help you discern which content works best with each marketing channel, enabling you to refine your strategy over time.

Influencer marketing platforms can also help you keep track of influencer partnerships and campaigns, making it easy to repurpose the most successful content in the future. They offer comprehensive influencer performance analytics which can assist in identifying the top-performing influencers for your brand. These insights could be instrumental in driving your future campaigns.

Remember, while reusing influencer content across marketing channels is a good strategy, always ensure you have the necessary permissions and rights to do so.