---
title: "Connect Thunderbird"
description: "Installation guide for Thunderbird on Windows"
url: https://support.signitic.com/en/articles/9561130-connect-thunderbird
collection: "Connectors"
updated: 2026-11-07
language: en
alternates: [fr, de, it, pt]
---

# Connect Thunderbird

Installation guide for Thunderbird on Windows

This guide is for users who want to use their Signitic signature in **Thunderbird** on their **Windows** computer.

## **❶** Download the Signitic Agent

Download the _Signitic_ Agent for Windows to your computer.

Download the application

**_Warning_** _: Several versions of the Signitic Agent are available. Make sure you choose the one that matches your machine._

## **❷** Run the downloaded file

The application will begin installing immediately.

## **❸** Sign in

![](https://staticfiles.gleap.io/helpcenter/669e4628f35b0c8e9eff6ebe/20240731162220_6255.png)

Sign in using **Google**, **Office 365** or your **login key.**

## **❹** If Outlook is not installed on your computer

If **Outlook** is not installed on your computer, please create a path for signatures to be added to your machine.

```javascript
C:\Users\###########{{Username}}\AppData\Roaming\Microsoft\Signatures
```

**###########{{Username}}** should be replaced with the session username.

**Note** : The _AppData_ folder is hidden.

In the Signitic client, update your signature by clicking the "**Update**" button at the bottom of your profile page. The signatures should now appear in the _Signatures_ folder.

## **❺** Account settings

In the Thunderbird menu, go to **Tools** then **Account Settings**.

**Note** : If the menu bar is not visible, press the ALT key on your keyboard to display it.

In the left-hand menu, select the relevant email account, then check the box **Attach the signature from a file (text, HTML, or image).**

Then click **Choose**, navigate to the destination folder mentioned in step 4, then select the signature you want.

![](https://staticfiles.gleap.io/helpcenter/669e4628f35b0c8e9eff6ebe/20240731162220_1673.png)

And that's it, your Signitic signature will be updated every night.

## **❻** Signature for replies/forwards

If you would like to have a signature for replies and/or forwards, go to **Tools**, then **Composition and addressing.**

![](https://staticfiles.gleap.io/helpcenter/669e4628f35b0c8e9eff6ebe/20240731162220_7109.png)

To make sure your signature appears below your reply message, stay on the same page.

Below _"quote the original message in the reply"_ select **reply starts before the quote** and then select the option below **below my reply (above the quote)**.

## ⚠ Known issues

If you have display issues in Thunderbird, check that HTML is enabled in **Preferences** \-> **View** \-> **Message Body** -> **Original HTML**.