The EcpUrl-tm element contains a value that, when appended to the value of the EcpUrl element (section, results in a URL that can be used to access a list of all site mailboxes of which the user is currently a member. It is an optional child element of the Protocol element (section<24>

The value of the EcpUrl-tm element is similar to the following: "?ftr=TeamMailbox& realm=contoso.com".