CodeTwo Signatures Web Add-in for Outlook endpoints

This article lists all endpoint addresses used by the CodeTwo Signatures Web Add-in for Outlook (the modern Web Add-in). If your organization uses an endpoint security mechanism (endpoint filtering) that blocks or allows specific endpoints (URLs, IP addresses, port numbers, etc.), be sure to allow traffic on the specified addresses. Otherwise, the add-in will not work. 

General add-in endpoint address

The following endpoint address is used by CodeTwo Signatures Web Add-in for Outlook irrespective of the Azure region in which the add-in resides. You need to whitelist this address in your system's firewall, or any endpoint security tool used in your organization.

https://emailsignatures365-outlookaddin.codetwo.com

Add-in endpoint addresses for specific regions

The add-in also uses all of the following endpoint addresses. You don’t need to whitelist all of them, but only the one(s) used for the Azure region you selected when registering your Microsoft 365 tenant in CodeTwo Admin Panel.

Australia East

https://au-api.outlookaddin.codetwo.cloud

Canada East

https://ca-api.outlookaddin.codetwo.cloud

Germany West Central

https://de-api.outlookaddin.codetwo.cloud

North Central US

https://us1-api.outlookaddin.codetwo.cloud

North Europe (you need to whitelist both addresses shown below)

https://eu2-api.outlookaddin.codetwo.cloud

https://eu5-api.outlookaddin.codetwo.cloud

UAE North

https://uae-api.outlookaddin.codetwo.cloud

UK South

https://uk-api.outlookaddin.codetwo.cloud

West Europe

https://westeu-api.outlookaddin.codetwo.cloud

West US

https://westus-api.outlookaddin.codetwo.cloud