Program's components

The components of CodeTwo Email Signatures for Office 365 can be divided into two groups:

  1. Application interface components managed by the customer.
  2. Services installed on Microsoft Azure servers and handled by CodeTwo.

In this article you can learn about each component.

1. Application's interface

CodeTwo Admin Panel

This is a completely web-based interface. From the Admin Panel, an admin can:

  • control the settings of multiple tenants,
  • launch the Manage Signatures App,
  • change the payment method and purchase a subscription,
  • check the service status,
  • change the email address and other properties of the admin's account,
  • access the user's manual and contact CodeTwo Support.

Manage Signatures App

The Manage Signatures App is a ClickOnce application which is used to manage signature rules and create signature templates via the built-in Editor. CodeTwo Admin Panel account credentials are not required to access the program. Any global admin of an Office 365 tenant can use the Manage Signatures App, as long as this tenant was registered in the CodeTwo Admin Panel first.


You can easily switch between the Admin Panel and the Manage Signatures App.

  • To access the Manage Signatures App for a selected tenant, click the Manage signatures (ESIG for O365 manage button 14px) button displayed next to your tenant name in the Admin Panel.
  • Use the Settings (ESIG for O365 settings button 14px) button in the upper right corner of the Manage Signatures App window to switch to tenant management pages in the Admin Panel. You do not need Admin Panel account credentials to access these pages. Learn more

CodeTwo Email Signatures for Office 365 Add-in

CodeTwo Email Signatures for Office 365 features an Outlook Web Add-in that allows users to preview signatures (that will be added server side by the CodeTwo Email Azure Service) while composing emails in Outlook and Outlook on the web (OWA). Learn more

Custom Attributes Sync App

The Custom Attributes Sync App is a ClickOnce application that synchronizes custom Azure AD attributes to CodeTwo Email Signatures for Office 365, in non-hybrid (cloud) environments. Learn more

2. Services

The services in CodeTwo Email Signatures for Office 365 use TLS (Transport Layer Security) 1.2 to provide maximum safety and meet all Microsoft standards. Below you can find information about each service.

CodeTwo Email Azure Service

The main engine of our software, deployed to Microsoft Azure servers. It's responsible for the processing of your rules and stamping emails with signatures and disclaimers.

Azure AD cache

Another CodeTwo service installed in Microsoft's datacenters. The Azure AD cache holds a local copy of your Office 365 Active Directory properties to allow for instant resolving of AD attribute placeholders without the need to constantly query your Active Directory. The service synchronizes this cache with the actual AD every 60 minutes. Learn more

Sent Items Update (SIU)

The SIU service is responsible for updating email copies in the Sent Items folder with the signatures that were added (by the program) to outgoing emails. Learn more on this feature and how to enable it in this article.

Was this information useful?