Exchange

Exchange Server 2016 licensing

Learn about your options for licensing Exchange Server 2016. For information about prerequisites for licenses, see Exchange Server 2016 Prerequisites.

Server licenses

With this license type, a license must be assigned for each instance of the server software that is being run. There are two server editions:
  • Standard: designed for the mailbox needs of small to midsize organizations. Also appropriate for non-mailbox roles in a larger Exchange deployment. This edition supports 1 to 5 mailbox databases.
  • Enterprise: designed for larger organizations that may require a greater number of mailbox databases. This edition supports 1 to 100 mailbox databases.

Client access licenses (CALs)

With this license type, a CAL is required for each user or device that accesses the server software. There are two types of CALs for Exchange, both of which work with either edition of the server:
  • Standard: designed to help users be more productive from virtually any platform, browser, or mobile device, with features in Exchange Server 2016 that help your users be productive no matter where they are—while helping protect your organization's data.  To enable Standard CAL features for a user, the user must be licensed with the Standard CAL.
  • Enterprise: designed to allow organizations to reduce the cost and complexity of meeting compliance requirements with new integrated archiving functionality and information protection capabilities, while also helping you cut costs by replacing legacy voice mail systems with Unified Messaging. The Enterprise CAL is sold as an add-on to the Standard CAL—to enable Enterprise CAL features, the user must be licensed with one Standard CAL plus one Enterprise CAL.
The following table provides a detailed feature breakdown for each CAL

Feature

Standard CAL

Standard plus Enterprise CAL

Email, calendar, contacts, and tasks

Yes

Yes

Outlook on the web (Internet Explorer, Firefox, Chrome, Safari, and Edge support)

Yes

Yes

Apps for Outlook and Outlook on the web

Yes

Yes

Site mailboxes

Yes

Yes

Role-based access control (RBAC) capabilities

Yes

Yes

Journaling

Per database

Per user/distribution list

Journal decryption

No

Yes

Unified Messaging

No

Yes

Retention policies

Default and custom

Default and custom

In-Place Archive

No

Yes

Multi-mailbox search

Yes

Yes

In-Place Hold

No

Yes

Data Loss Prevention (DLP)

No

Yes

Information protection and control (IPC): transport protection rules, Outlook protection rules, Information Rights Management (IRM) search

No

Yes

Features

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Email, calendar, contacts, and tasks

Standard CAL

Yes

Standard plus Enterprise CAL

Yes

Outlook on the web (Internet Explorer, Firefox, Chrome, and Safari, and Edge support)

Standard CAL

Yes

Standard plus Enterprise CAL

Yes

Apps for Outlook and Outlook on the web

Standard CAL

Yes

Standard plus Enterprise CAL

Yes

Site mailboxes

Standard CAL

Yes

Standard plus Enterprise CAL

Yes

Role-based access control (RBAC) capabilities

Standard CAL

Yes

Standard plus Enterprise CAL

Yes

Journaling

Standard CAL

Per database

Standard plus Enterprise CAL

Per user/distribution list

Journal decryption

Standard CAL

No

Standard plus Enterprise CAL

Yes

Unified Messaging

Standard CAL

No

Standard plus Enterprise CAL

Yes

Retention policies

Standard CAL

Default and custom

Standard plus Enterprise CAL

Default and custom

In-Place Archive

Standard CAL

No

Standard plus Enterprise CAL

Yes

Multi-mailbox search

Standard CAL

Yes

Standard plus Enterprise CAL

Yes

In-Place Hold

Standard CAL

No

Standard plus Enterprise CAL

Yes

Data Loss Prevention (DLP)

Standard CAL

No

Standard plus Enterprise CAL

Yes

Information protection and control (IPC): transport protection rules, Outlook protection rules, Information Rights Management (IRM) search

Standard CAL

No

Standard plus Enterprise CAL

Yes

Questions?

In the United States, call (800) 426-9400. In Canada, call (877) 568-2495.

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