I agree, you may want to look at https://support.workfront.com/hc/en-us/community/posts/115005754127-Inbound-Email-should-be-handled-in-a-reasonable-amount-of-time , and https://support.workfront.com/hc/en-us/community/posts/115007074748-Add-ability-to-upload-documents-through-email-replys as well!