Currently, the 'File Upload' field has a maximum upload capacity of 2GB(2048 MB) data upload per Form. This is a limitation of the browser to prevent timeouts so your total uploads cannot exceed 2GB. If you have three File Upload Fields, the maximum upload capacity for all three fields must be 2GB or less.
We suggest adding supporting text to the File Upload field stating that the total file upload data must be no larger than 2GB (or lower if you choose) as a safeguard.
Furthermore, if you are attaching uploaded files to your Notification Emails, they are limited to 14 MB. If your upload(s) are larger than 14 MB, it will send links to the upload instead.
It's important to note that File Upload integrations will have a 500 MB limit because of the way in which file upload integrations work. For more information on the different file upload integrations we offer and how to extend your storage space, check out: Box, Dropbox, Google Drive , Microsoft OneDrive , or Amazon S3 with your forms.