---
title: "Should I use the add-in or the Agent?"
description: "Which solution should I choose when connecting to Signitic?"
url: https://support.signitic.com/en/articles/9424702-should-i-use-the-add-in-or-the-agent
collection: "Get started with Microsoft 365"
updated: 2026-10-20
language: en
alternates: [fr, it, de, pt]
---

# Should I use the add-in or the Agent?

Which solution should I choose when connecting to Signitic?

Signitic offers a few solutions depending on which email client you use. The Add-in and the Agent are both good options for Microsoft Outlook users, but it's important to know that each option has its own prerequisites to follow to use them.

## **❶** What you need to use the add-in

The add-in is the most complete and automated solution of the two Microsoft options.

The Signitic add-in for Outlook Windows is available only for Outlook/OWA users with a **subscription and a Microsoft 365 version.**

⚠ **Minimum versions:**

-   Current channel: **v16.0.14026.20000** _(or later)_
    
-   Monthly channel: **v16.0.14131.20000** _(or later)_
    

![](https://staticfiles.gleap.io/helpcenter/669e4628f35b0c8e9eff6ebe/20240731162142_1138.png)

## **❷** What you need to use the agent

The agent lets you push plain signatures to **older** versions of Outlook 2013 to 2021 and Apple Mail.

If you're using [Apple Mail with the agent you can use this article to help with installation.](https://support.signitic.com/fr/articles/8224346-installer-l-agent-pour-apple-mail.md) We also offer a solution for [older versions of Outlook on MAC](https://support.signitic.com/fr/articles/8224347-installer-l-agent-pour-outlook-macos.md)

For using [the Outlook Agent for Windows](https://support.signitic.com/fr/articles/8224348-installer-l-agent-pour-windows-outlook.md), you can use this article to set up the solution.