We like to keep our servers in top condition. We do this by monitoring them carefully. We take action against abuse of storage, bandwidth and our mail server.
Unlimited disk space and/or bandwidth:
There are no hard limits on our servers for the amount of bandwidth or disk space (in our managed plan) that an account can generate. When an account stands out from the rest of the sites, we take a look at the account and see what can be optimized, or if the site is the victim of hacking attempts or security issues. We will contact the account holder to discuss what needs to be done to reduce un-optimized usage.
Unlimited FTP and email accounts:
You can create as many of these if you want, but please be selective. A website owned by a company of 5 staff, probably doesn't need 25 FTP accounts or 50 email addresses.