CodeTwo Outlook Add-ins overview
CodeTwo Email Signatures for Office 365 lets you set up client-side signatures (Outlook signatures) that are automatically added to emails in Outlook as users type. You can set up default signatures for new messages and for replies/forwards. Users can also manually select a different signature in Outlook.
Client-side signatures are added by an Outlook add-in that can be deployed organization-wide. There are two CodeTwo add-ins that you can use:
- New experience: CodeTwo Signatures Web Add-in for Outlook that works with Outlook for Windows, Outlook for Mac (early access) and Outlook on the web (OWA). This modern Web Add-in offers better experience and more capabilities. It can also be used to preview server-side signatures
- Classic experience: CodeTwo Signatures Add-in for Outlook (COM Add-in) that works with Outlook for Windows only.
You can only use either of the add-ins, so deploy the one that best matches your preferences. If you have already deployed one of them, uninstall it first before deploying the other one. Otherwise, the add-ins can conflict with each other.
See the table below for a quick comparison of the two signature add-ins for Outlook available for CodeTwo Email Signatures for Office 365:
| Modern Web Add-in | Classic COM Add-in | |
|---|---|---|
| Supported platforms |
Outlook for Windows |
Outlook for Windows |
| Supported signature mode | All | Client-side & combo only |
| Deployment | Central via the Microsoft 365 admin center Deployment instructions |
Central via GPO or Intune, or individual by Outlook users Deployment instructions |
| How are signatures inserted? | Automatically (event-based) or manually (via the CodeTwo Signatures pane) | Automatically or manually (via the Outlook's Signatures command) |
| Who gets signatures? | Users defined in client-side signature rules | Users defined in client-side signature rules as well as other Outlook users1 |
| Preview of server-side (cloud) signatures | Yes Learn more |
No |
| Disable users' default Outlook signatures | Yes Learn more |
Yes (Outlook for Windows only) Learn more |
| Switch between Outlook (client-side) and cloud (server-side) signatures | Yes Learn more |
No |
| User log in requirement | No | Yes |
| How often the add-in syncs with CodeTwo services? | Real-time synchronization2 | Every couple of minutes or manual |
1 Client-side signatures added by the COM Add-in can be accessed by and used with other accounts configured in the same Outlook app where the add-in is installed.
2 Changes made in the signature management app are instantly applied to signatures in Outlook.
Modern Web Add-in deployment
See the instructions below on how to centrally deploy the CodeTwo Signatures Web Add-in for Outlook to users in your organization via:
- Microsoft AppSource (the easiest method)
- the Microsoft 365 admin center
Important
Be sure to design at least one signature template and define users who should get it. See this article to learn how to do so.
Classic COM Add-in deployment
Use the links below to learn how to deploy the classic CodeTwo Signatures Add-in for Outlook:
Important
The COM Add-in works only with client-side signatures, so make sure that CodeTwo Email Signatures for Office 365 operates either in client-side or combo mode in your organization (learn more about signature modes). You also need to create and configure at least one client-side signature rule (see our guide on that).