Thru Server 9.3.3 Release Notes Febuary 18 2017

FRENCH LANGUAGE SUPPORT ADDED IN THRU WEB APPLICATION
French language localization is added in Thru web application.
Thru web application now supports English, German, French, Spanish, Dutch, Italian, Traditional and Simplified Chinese.

SUPPORT FOR TLS1.1 AND TLS1.2 SECURITY PROTOCOLS
Since Salesforce discontinues support for TLS 1.0 protocol in July 2017, support for TLS 1.1 and TLS 1.2 is added, TLS 1.2 is used by default.

EXPIRATION DATES EDITING IN THRU WEB MAIL
Ability to edit expiration dates is added to Thru web application in Sent Mail section.
The feature allows to unexpire expired links. Previously available only in Outlook and Notes client add-ins.