Benchmark custom field limitations



Benchmark has a limitation with their API that only allows a set number of custom fields that are fixed and hard-coded. With mailfloss, we occupy Fields 17 to 24 with our data. That means any data in these fields will get overwritten by mailfloss data. 

If you currently have data in these fields and do not want this to happen, we advise not using the mailfloss update custom fields feature and choose another action such as unsubscribe or delete.