How do ESPs integrate with validation or hygiene tools?

Most ESPs support integration with validation services through APIs or built-in partnerships. You can validate lists before import, clean existing lists within the platform, or trigger validation during signup flows.

Integration methods include: native partnerships (**ESP** includes validation as feature), **API** connections (you configure third-party validation), import-time validation (automatic checking during list upload), and real-time validation (checking at form submission).

Benefits of integration: cleaner lists without manual export/import cycles, automated hygiene maintenance, reduced bounces protecting **sender reputation**, and consistent validation across all list sources. Evaluate **ESP** validation capabilities when choosing platforms.