This is the list of the main features classified by category and edition. The 45-day evaluation version's only limitation is that it can only report on a period of 15 consecutive days

Feature Std. Pro. Ent.
Various graphical reports including histograms, 3-D charts, line charts, pie charts.
Mailbox traffic reports show in detail with whom your users are corresponding.
Mailboxes can be selected based on various Active Directory attributes (server, OU, department...).
Traffic and content reports drill down to the message level.
Traffic statistics reports produce graphs showing traffic breakdown by days, hours, size of messages or number of recipients.
Storage reports show you how your storage capacity is used and how it changes over time.
Mailbox content analysis reports reveal what users are storing in their mailbox, e.g. attachments.
Mailbox content reports include keyword search feature.
You can group items by age to point out what could be archived.
Public folders reports show a clear picture of who uses them, when and for what purpose.
Server traffic reports display the type of traffic processed by servers.
Reports on Outlook Web Access.
Reports on ActiveSync activity.
Reports on connector flow. n/a1
Reports on replication traffic. n/a1
Delivery reports help you measure your service level agreement by calculating internal message delivery time.
Billing reports allow chargeback based on mailbox storage size or message traffic.

1 Standard edition is for one server organization so replication and connector reporting are not applicable.

Feature Std. Pro. Ent.
Works with all versions of Exchange Server including 2016 and Office 365.
Use native Exchange server data sources.
Low-impact log processing.
Compressed Log files after data processing.
Distributed log collection.
No IIS server needed.
Access database option (limited to 2 GB).
SQL Server database option (2016, 2012, 2008 R2, 2008, 2005). n/a1 n/a1
Tracking of a virtually unlimited number of messages and IIS-related events in an SQL database. n/a1 n/a1
Multiple databases support.
Can be installed on a workstation.
Implementation in Microsoft.Net.

2 Microsoft have set the maximum size of an Access database to 2 GB.

Feature Std. Pro. Ent.
Import Exchange settings directly from Active Directory.
Send trace file by email.
Console activity history.
The account used to collect data can be impersonated.
Database management.
Standard Windows scheduler for automation.
Feature Std. Pro. Ent.
Getting Started Wizard.
Report tree navigation with tooltip. Custom styles for reports.
Reports can be automatically exported to different formats: HTML, PDF, XLS, CSV, RTF, MHT.
Reports can be automatically sent by email.
Reports and notifications can be send with MAPI or SMTP.
Reports can be automatically published in a public folder, a Web site or to a SharePoint document library.
Data collection, report generation, export and publication may be automated and scheduled.
Individual mailbox reports can be automatically sent to the user or manager.
Report options can be saved for instant access using the Favorites menu.
Selections of mailboxes, servers, filters, partners can be saved separately and re-used in reports.
Reporting period can be restricted to specific days or business hours.
Time-zone specific reporting.
Daylight Saving Time is taken into account when importing tracking files.
Interface is available in English, German and French.
Reports can be generated in Spanish, Italian, Dutch and Portuguese.

Feature Std. Pro. Ent.
The software can analyze more than 1 server. n/a1
The software can be installed on several workstations. n/a1
The software is licensed per analyzed server. n/a1