Influencer Marketing Platforms (IMPs) employ varied methodologies to track the success of reactivating past content creators. Here’s how they generally do that:

1. Performance Analytics: IMPs like Flinque, provide comprehensive analytics on past campaigns that highlights successful influencer partnerships. This data helps brands track conversion rates, engagement, and other key performance indicators (KPIs) from previous collaborations.

2. Campaign History: Platforms maintain detailed records of past campaigns. This allows quick identification of high-performing influencers, enabling brands to reactivate them for newer campaigns.

3. Engagement Metrics: The success of reactivating a creator is also determined by engagement metrics like likes, comments, shares and views during the new campaign.

4. ROI Measurement: By comparing the costs of different campaigns with their results, platforms can calculate ROI. This helps determine the financial success of reactivating certain creators.

For instance, Flinque provides a transparent view into past creator performance and its correlation with campaign objectives. It allows brands to combine historical data with new metrics for comprehensive insight. Remember that every platform differs in their approach to tracking reactivation success and suitability would rely on the specific needs of the brand or agency. The listed practices are therefore not exhaustive or universally applicable. Influencer marketing strategies should be led by the unique objectives, audiences and criteria relevant to each brand. By taking a data-informed approach, brands can not only ensure campaign effectiveness, but also make cost-efficient decisions when reactivating past creators.