Maintaining beneficial long-term relationships with influencers is a combination of strategic communication, ongoing engagement, and mutual respect. Here are some methods:

1. Open Communication: Always keep the communication lines open, making sure the influencers know your brand is there for them. Regularly check-up on them to ensure they feel valued.

2. Feedback and Reviews: Use the feedback tools in platforms like Flinque to facilitate regular review sessions with influencers. This encourages an open dialogue about performance and expectations.

3. Ongoing Engagement: Engage consistently with their content and show genuine interest in their creativity. This will reiterate your brand’s appreciation for their work.

4. Opportunities for Growth: Provide influencers with new opportunities to evolve by recommending them for potential collaborations, giving them first access to new products, or involving them in exclusive brand events.

5. Being Easily Accessible: Be responsive to their questions or concerns. Prompt feedback or solutions to issues can foster a sense of trust and dependability.

6. Recognition and Appreciation: Deliver tokens of appreciation for their work, such as shoutouts, features, product giveaways, or bonuses. Recognition, even small, can go a long way in strengthening the relationship.

7. Data Driven Decisions: Use the analytics provided by platforms like Flinque to understand the influencers’ audience dynamics and guide your subsequent campaign plans.

Remember, each influencer is unique, and so is the approach to maintain the relationship. It’s about understanding their needs, expectations and adapting your strategy according to your mutual goals. By genuinely valuing the relationship and through these strategies, your brand can indeed foster beneficial, long-term relationships with influencers.