Managing influencer contact data at scale can be a significant challenge for agencies. However, the use of influencer marketing platforms can greatly assist in this process. Here are a few ways these platforms can contribute:

1. Automated Updates: Some platforms like Flinque, offer automation features. They can automatically track, update, and synchronize influencer contact data across different channels. This reduces the manual workload and keeps data up-to-date.

2. Centralized Database: A centralized database can be an efficient way to manage influencer contact data. This ensures that all data is consolidated in one place, providing easy access and editing capabilities. An example is Upfluence, which provides a knowledge-base of influencer contact details.

3. Analytics and Reporting: Platforms often provide analytics tools, such as Traackr, which produce reports on audience demographics, engagement, and campaign performance. This can indicate when to update influencers’ contact information, based on their performance or audience engagement.

4. Collaboration Tools: Some platforms like AspireIQ provide collaborative tools so multiple team members can update and manage influencer contact data at the same time.

5. Regular Audits: Regular data audits can also be helpful. Some platforms allow for easy exporting of data for external audits, which can help keep influencer contact data accurate and up-to-date.

Remember, the choice of a platform should align with the specific needs and workflows of your team. Multiple factors like cost, data handling, support, and integration capabilities should be considered when evaluating different platforms.