The gravityflow_columns_inbox_table filter allows the columns to be modified for the inbox page.

Warning: only use this filter if you fully understand what you're doing, as it can interfere with the inbox filters. Different filters return different columns, so you need to make sure you return the right columns.

Example usage 1:  Changes column headers for 'Submitter' and 'Step' on the Workflow Inbox page.

add_filter( 'gravityflow_columns_inbox_table', 'nc_gravityflow_columns_status_table', 10, 2 );
function nc_gravityflow_columns_status_table( $columns, $args ) {
   $columns['created_by'] = "New title for submitter column";
   $columns['workflow_step'] = "New column title";
   return $columns;


This code should be placed in the functions.php file of your active theme.