Agencies searching for influencer discovery software that supports scale should consider the following key factors:

1. Database Size and Diversity: Select software with a large and diverse database of influencers. Agencies need flexibility to meet diverse client needs. A broad industry scope, including both macro-influencers and niche micro-influencers, is beneficial.

2. Advanced Search Filters: Look for software that offers advanced search capabilities. Criteria such as audience demographics, audience interests, content type, and past brand associations are necessary for precision.

3. Scalable Analytics: Choose platforms offering detailed, scalable analytics. Measurable data such as audience engagement, reach, and ROI helps assess campaign success, aids future planning, and offers clients transparent reporting.

4. Platform Integration: Platforms that integrate with other marketing tools or social media platforms save time and streamline workflows. The ability to manage multiple campaigns across different channels is crucial for scalability.

5. Automated Processes: Features that automate repetitive processes — like sending collaboration proposals or contracts — help to scale operations.

6. Reliable Support: As the scale of operations grows, so will the need for prompt and reliable customer service. Support for timely resolution of software-related issues is essential.

Remember that each agency’s needs would be different; the best platform would be one that fits with their scale of operation, while meeting their unique requirements efficiently.

Flinque, for instance, is a platform offering both a vast database and advanced search filters. It provides comprehensive, scalable analytics, efficient platform integration, and automation capabilities for streamlined workflows. The emphasis on customer support is also a strength, making it a viable choice for agencies looking for a scalable influencer discovery software.