True ETL Tools
If you need more than just to copy data from Formstack to Amazon Redshift, you may use Skyvia's powerful ETL functionality for Formstack and Amazon Redshift integration. Skyvia's Import tool will correctly extract Formstack data, transform it, and load to Amazon Redshift when Amazon Redshift tables have different structure than Formstack objects. Besides, if you ever need to load data back from Amazon Redshift to Formstack, Skyvia Import allows loading data in any direction, supporting Reverse ETL scenario.
For more complex cases, you can use Data Flow and Control Flow tools. They are designer-based solutions for creating complex data pipelines, involving not only Formstack and Amazon Redshift connectors, but any number of connectors in one integration. With these tools you can automate data workflows, involving custom logic, complex multistage transformations, combine data from different sources, load them into multiple destinations at once and many more.