Folders Containing Large Number of Files (v1)
An Automation v1 configured on a folder containing a large number of files may experience performance issues or be disabled. The soft limit is 10,000 files per folder. The hard limit is 100,000 files per folder, and when a folder reaches or exceeds that limit, the Automation will fail.
The hard limit applies when the Automation lists the source folder to find matching files, such as with triggers like interval, custom schedule, or inbound webhook. A file action based trigger identifies the affected file directly, so it does not need to list the source folder and is not subject to this source-folder limit.
To keep folders under the limits, use automatic file organization by file extension, creation date, modification date, or regular expression to move files from large folders into subfolders. This produces smaller collections that Automations can process reliably.
Another way to manage file count is the File Expiration folder setting. File Expiration automatically deletes files after they reach a specified age, preventing folders from growing too large over time.