Fields
Sample data
This filter answers yes or no for each item, so there is no before and after. The example uses a “key exists” check on theemail path, so it keeps only items that have an email.
Key condition
filter items where they key filter matches.
Keeps an item based on whether a particular key is present in the data. You choose a key check, such as “this key exists” or “this key does not exist”, and point it at a path in the item. The item is kept when that check passes and filtered out when it does not. Use this for a quick presence test, for example “keep only records that have an email address”.