…ckend

For being able to evaluate the conditions on the backend the form data gets sent as payload to the `condition.json` route. In case of upload files (a.k.a `[type=file]`) the entire set of selected files are being uploaded with every change of basically every input field. This is resource and time consuming.

In case you don't rely on upload field within your set of conditions you can exclude them from being sent to the backend. To do so just specify add a parameter `data-powermail-cond-excluded-fields-selector` to the form template.

Related: in2code-de#23