Hi Tom,

Thanks for submitting this request! I'm Kevin from Product here at Fivetran. We don't support Snowpipe because it only appends data to a table.  In order to guarantee data integrity, we have an idempotent data loading strategy that must run queries on the cluster. We've done a lot of work to make it extremely efficient, and in general Fivetran is uses much fewer Snowflake credits to ingest the same source of data as other services.

Please let me know if you have any further questions!