CodeTwo Email Signatures for Email Clients


Date Published: 14 Apr 2016
Latest Version: 1.6.3.24
Size: 80.8 MB


Supported platforms

Can be installed on
Windows Server 2012 / 2008
Small Business Server 2011 / 2008
Windows 10* / 8.1 / 8 / 7 / Vista

*In the case the program does not work after upgrading to Windows 10 from Windows 7 or 8.1 please reinstall it.

Works with
Microsoft Outlook 2016 / 2013 / 2010 / 2007
OWA (Outlook Web App) 2016 / 2013 / 2010 / 2007
Office 365
Google Apps for Business / Gmail

Support for 32 / 64 bit platforms.
In non-domain environments, the program must not be installed together with Microsoft Outlook 64-bit.

.NET 4.5 or higher is required



Version history

Version 1.6.3.24
Date 14 April 2016
New: Full support for MS Outlook 2016.
New: Full support for MS OWA 2016.
Fixed: Listing mechanism of Office 365 users has been improved (e.g. users with no mailbox are not listed now). Memory errors while listing a large number of users have been fixed.
Fixed: Users meeting the criteria of the policy both as an AD user and as an AD group were licensed twice.
Fixed: From now on a warning is displayed if an Office 365 OWA signature is getting close to the size limit.
Fixed: Minor bug fixes and code optimization.
Version 1.6.1.3
Date 19 Oct 2015
Fixed: The program was not able to list more than 100 Google Apps mailboxes.
Version 1.6.0.28
Date 04 May 2015
Changed: Connection to Google Apps now uses OAuth2 authentication.
New: The program no longer supports Windows XP, Windows Server 2003 and Small Business Server (SBS) 2003.
New: Support for .NET 4.5 or higher that is required now for the program to work.
Fixed: In some cases, a fully qualified file name to images in signatures exceeded 260 characters, which led to images being not displayed at all.
Fixed: The Client App asked to provide an email address to an Outlook profile even if only one profile was present.
Fixed: The Client App did not cache Outlook profile email addresses provided by the user and asked for them after every restart of the application.
Fixed: User lists in Office 365 and Google Apps policies were not automatically refreshed.
Version 1.5.0
Date 10 Feb 2015
New: The licensing mode was changed and now licenses are assigned per mailbox (regardless of the number of policies a particular mailbox is associated with). It means that, if you include the same email address, e.g. to Outlook and OWA policies, only one license is consumed.
New: You can now check for program’s updates directly via the Administration Panel.
New: Signature templates in the Library were modified and are now available in three formats: HTML, RTF and Plain Text.
Fixed: Signatures were not inserted to emails sent by users using the same Windows Live ID.
Fixed: The frequency of updating policies’ settings was not applied to Client Applications using the Network Share distribution method.
Fixed: The program listed system mailboxes along users’ mailboxes while configuring Office 365 policy. If system mailboxes were included in the policy, the program consumed licenses for these mailboxes.
Fixed: It is no longer possible to bind individual Office 365 / Google Apps user accounts to several different Active Directory accounts.
Fixed: Texts within the program’s UI and notifications were modified.
Version 1.4.0
Date 26 Aug 2014
New: Possibility to centrally adjust the Client Applications’ update time.
Fixed: Support for Exchange Attributes in Office 365.
Fixed: Improved mechanism of resolving Primary SMTP email address while pulling data from Office 365 to fill the {E-mail} dynamic content specified in the signature template.
Fixed: Improved mechanism of listing Google Apps users.
Fixed: Improved mechanism of setting the default signature in the Outlook policy type
Fixed: Improvements of texts and links within the program’s UI.
Fixed: Minor bug fixes and code optimization.
Version 1.3.0
Date 15 May 2014
New: Support for .NET 4.0 or higher that is required now for the program to work.
New: Different types of MSI package used for the Client App installation.
New: Client App does not require administrative permissions to be ran anymore.
New: Two modes of Client app’s installation: per machine and per user.
New: Policy deployment Configuration Wizards for OWA 2010/2013, Office 365 and Google Apps.
New: Texts modifications within the policies deployment configuration windows.
Fixed: Problem with updating OWA 2013 policy via the Central Updating Service.
Fixed: Automatic assignment of impersonation rights on users mailboxes on Exchange 2013.
Fixed: The continuous usage of the 32-bit Client App used to cause the memory leak what resulted in the rapid growth of the app’s RAM usage.
Fixed: Local library image browser button was inactive while creating signatures within the Outlook policy type.
Fixed: In some cases images inserted to signatures from the local library were not visible in mail sent from Outlook 2013.
Fixed: {Office} and {Fax} placeholders are now available while creating signatures for Office 365 policy type.
Fixed: {Photo} placeholder has been removed from the list of available placeholders for Office 365 policy type.
Fixed: Texts and links within the program were corrected.
Fixed: The readme.html file was filled with information on the Client Applications’ installers choice.
Version 1.2.9
Date 10 Jan 2014
Fixed: Option to insert web located pictures into a signature restored for OWA, Office 365 and Google Apps policies.
Fixed: The shortcuts to Administration Panel and Client Apps didn’t contain the program’s name.
Fixed: Clarification of error message text in case the server connection cannot be established.
Fixed: Some changes (e.g. Automatically append a signature to outgoing messages) in OWA policy settings were not immediately updated to users’ accounts.
Version 1.2.8
Date 25 Nov 2013
New: Automatic deployment of OWA 2007 policy via the Client App.
New: Other tab in the OWA 2007 policy Editor.
Fixed: Optimization of the Central Updating Service.
Fixed: Optimization of the Client App.
Fixed: For some placeholders, {RT} Remove Text Tag was removing its content even though the corresponding AD field was not empty.
Fixed: Central Updating Service failed to correctly distribute updates for OWA 365 policy type after simultaneously changing settings in the Other tab and the signature's content in the Signature/Disclaimer template Editor.
Fixed: It was possible to add pictures to signatures via the Signature/Disclaimer Template Editor for OWA/OWA 365 policy type even though such feature is unavailable in OWA/OWA 365.
Fixed: In rare situations the content of user.config file was removed from the Client App what caused the App to crash.
Fixed: It was possible to define a signature in RTF for OWA 2007 policy type even though this format is not supported by OWA 2007.
Fixed: "Object reference not set to an instance of an object" and "Unhandled exception" errors while choosing Google Apps user for the first time via Bind users to Active Directory window in the Google Apps policy deployment.
Fixed: "Object reference not set to an instance of an object" error while setting up the deployment method via the Configure deployment settings notification window.
Fixed: Windows XP user could neither log out nor shut down the system after installing the Client App.
Fixed: Improvement and clarification of notifications within the program.
Fixed: Improvement of the program’s GUI.
Fixed: Minor bug fixes and code optimization.
Version 1.2.7
Date 6 Jun 2013
Fixed: An error with the log files growing uncontrollably large.
Fixed: Enabling “Set default email format to” (in an existing Office 365 policy) and “Delete existing signatures” (in an existing Outlook policy) options were not detected and thus not updated.
Fixed: Incorrect error message at failed connection attempt to Active Directory or Workgroup.
Version 1.2.6
Date 18 Mar 2013
New: Program now supports environments without Active Directory.
New: List of users is now being cached in Central Updating Service.
New: Now the signature update interval and cache reload interval can be changed via configuration file.
Fixed: The Deployment tab was rebuilt to simplify program’s configuration.
Fixed: Now creating the rule forces user to also configure Deployment options.
Fixed: OWA policy is now split into OWA 2007 policy and OWA 2010 policy.
Fixed: Minor changes in GUI.
Fixed: Now the program’s license can be activated directly from the “Demo Expired” window.
Fixed: In Outlook rules you can define the user also by email address.
Fixed: Improved loading time of the OWA 365 and Google Apps user lists.
Fixed: Minor changes in GUI of the Client app.
Fixed: Placeholders working with AD only are now distinctively marked in the editor.
Version 1.1.0
Date 29 Jan 2013
New: Google Apps policy was introduced. Program now supports messages sent via Google Apps.
New: Support for messages sent via MS Outlook 2013.
Fixed: The program used to remove signatures from every rule if the option Delete Existing Signatures was set in one of the rules.
Version 1.0.12
Date 21 Dec 2012
New: The Set permissions button allows the user to set the impersonation permissions for the administrator of Office 365.
Fixed: The Signatures folder where the signatures of MS Outlook are stored was not correctly detected by the program in several language versions.
Version 1.0.11
Date 23 Nov 2012
New: This is the first release of the program.
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