Ease of email filing. very user friendly.

You do not have to worry about filing your emails and using up space on your server; TonicDM does it automatically for you on a cloud. Although I have not used this yet, Tonic has the feature to log Submittals and RFIs.

Easy email archiving. It's great that there are several different ways to archive emails, so if someone is used to using .PST files or team email addresses, they can still use TonicDM in the same way they are used to.