Thunderbird

Beautiful HTML
Email Signatures for Thunderbird

Create professional email signatures that work perfectly with Thunderbird. Easy to set up, always looks great.

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100+ professional email signature templates
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Easy deploy and install for Thunderbird users
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No server access or IT staff required
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Rescuing 1000's of Businesses from HTML signature stress
Create Your Thunderbird Signature
Email Signature Preview
Email Signature Rescue IconThunderbird

Email Signature Templates for Thunderbird

Choose from 100's professionally designed, tested and coded HTML email signature templates for Thunderbird.

email signature template design drone companyemail signature template design surf board companyemail signature template design south beach surfemail signature template design floristemail signature template design skincareemail signature template design author
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Email Signature Rescue IconThunderbird

Email Signature Software for Thunderbird

Our Email Signature Rescue software helps you create, manage, duplicate and install HTML email signatures in Thunderbird for you and all your staff. Control signatures from a single online Dashboard. End Users download Installer Apps and Browser Extensions for easy install and auto-updating.

Create Your Thunderbird Signature
Email signature example design

100's professionally designed and tested templates for Thunderbird

Create Your Thunderbird Signature
Email Signature Rescue IconThunderbird

Email Signature Install Guides for Thunderbird

Ready to install your email signature in Thunderbird? Here you will find all the info you need to get your signatures up and running in no time. Choose your install guide to get started.

Email Signature Rescue Icon Windows

How to install your HTML email signature in Thunderbird on Windows

Key Installs are not supported for this software.
We apologize for the service interruption. Check back here to stay updated.
Key Install Guide
Install with app, supports automatic installs & updates.You can find your Signature Key on your Email Signature Rescue Dashboard, or in the email sent to you by your Admin. Copy your Key now and get ready to paste it when prompted, following the Key Install Guide.
Direct Install Guide
Install directly, no automatic install & updates.You can find your HTML file on your Email Signature Rescue Dashboard, or it is attached to the email sent to you by your Admin. Open the HTML file in your browser, then follow the Direct Install Guide.

Key Install Guide for Thunderbird on Windows

Install with app, supports automatic installs & updates.You can find your Signature Key on your Email Signature Rescue Dashboard, or in the email sent to you by your Admin. Copy your Key now and get ready to paste it when prompted, following the Key Install Guide.
Windows 10/11 App
1

Copy your provided Signature Key. This may have been emailed to you, or you can access it from your Email Signature Rescue account.

2

Click the plus icon at the top left of the installer app to add a new email signature.

3

Click on the Select your email client drop down box and choose Thunderbird.

4

Click on the Select your email account drop down box and choose the email account you would like your email signature installed into.

5

Click on the insert your signature key field and press Ctrl + V to paste your copied signature key. If the key is valid, a green tick will appear on the right side.

6

Check the boxes below for Insert for new and Insert for replies/forwards, then click the Install Signature button.

7

Our installer app will now install your email signature into Mozilla Thunderbird for you. When you compose a new email within Thunderbird, your email signature will appear.

NOTE: When composing a new email, you will see red outlines surrounding your email signature. This is normal and is Thunderbird highlighting the table structure of your email signature. These lines do not appear when your email signature is sent.

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Direct Guide for Thunderbird on Windows

Direct Install Guide

Install directly into software, no automatic install & updates.You can find your HTML file on your Email Signature Rescue Dashboard, or it is attached to the email sent to you by your Admin. Open the HTML file in your browser, then follow the Direct Install Guide.
Key Install is recommended

As your email client supports Key Install, only use this Direct Install guide if Key Install is not working or not available for your requirements.

1

Open your HTML email signature file in your web browser.

Press Ctrl + A to select the entire email signature, then press Ctrl + C to copy it.

IMPORTANT: Do not use your mouse to select the area, only use Ctrl + A as you may miss out on grabbing some of the code.

2

Open Mozilla Thunderbird and click the icon at the top left of screen, then click Settings.

3

Select Account Settings at the bottom left of the settings window.

4

Click on the email account that you want to install an email signature for. To the right side you will see Account Settings appear with a large text field for your email signature's HTML code. Beneath that text field, check Attach the signature from a file instead (text, HTML, or image) and click Choose. Navigate to where you saved your HTML signature file and select it. Thunderbird will now pull the HTMLfile from this location and insert it into your emails.

NOTE: Make sure that the HTML file is stored somewhere that it won't be deleted. If your email signature file gets deleted, Thunderbird won't be able to reference it and it won't work.

5

Close out of your Settings and compose a new email. Your email signature will now automatically appear when composing a new email.

NOTE: When composing an email in Mozilla Thunderbird you will notice red borders around your email signature. This is normal and is Thunderbird highlighting the table structure of your email signature. These lines will not display once your email signature is sent.

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Email Signature Rescue Icon MacOS

How to install your HTML email signature in Thunderbird on MacOS

Key Installs are not supported for this software.
We apologize for the service interruption. Check back here to stay updated.
Key Install Guide
Install with app, supports automatic installs & updates.You can find your Signature Key on your Email Signature Rescue Dashboard, or in the email sent to you by your Admin. Copy your Key now and get ready to paste it when prompted, following the Key Install Guide.
Direct Install Guide
Install directly, no automatic install & updates.You can find your HTML file on your Email Signature Rescue Dashboard, or it is attached to the email sent to you by your Admin. Open the HTML file in your browser, then follow the Direct Install Guide.

Key Install Guide for Thunderbird on MacOS

Install with app, supports automatic installs & updates.You can find your Signature Key on your Email Signature Rescue Dashboard, or in the email sent to you by your Admin. Copy your Key now and get ready to paste it when prompted, following the Key Install Guide.
Mac OS Desktop App
1

Copy your provided Signature Key. This may have been emailed to you, or you can access it from your Email Signature Rescue account.

2

Click the plus icon at the top left of the installer app to add a new email signature.

3

Click on the Select your email client drop down box and choose Thunderbird.

4

Click on the Select your email account drop down box and choose the email account you would like your email signature installed into.

5

Click on the insert your signature key field and press Ctrl + V to paste your copied signature key. If the key is valid, a green tick will appear on the right side.

6

Ensure the Insert for replies/forwards box is checked, then click the Install Signature button.

7

Our installer app will now install your email signature into Mozilla Thunderbird for you. When you compose a new email, your email signature will appear.

NOTE: When composing a new email, you will see red outlines surrounding your email signature. This is normal and is Thunderbird highlighting the table structure of your email signature. These lines do not appear when your email signature is sent.

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Direct Guide for Thunderbird on MacOS

Direct Install Guide

Install directly into software, no automatic install & updates.You can find your HTML file on your Email Signature Rescue Dashboard, or it is attached to the email sent to you by your Admin. Open the HTML file in your browser, then follow the Direct Install Guide.
Key Install is recommended

As your email client supports Key Install, only use this Direct Install guide if Key Install is not working or not available for your requirements.

1

Download your HTML email signature file and save it on your Mac device in a secure location.

2

Open Mozilla Thunderbird and from your menu bar, select Tools, then click Account Settings.

3

On the left side, select the email account that you want to install your email signature into. Under the Default Identity section you will see your signature settings. Check Attach the signature from a file instead (text, HTML, or image) and click Choose. Navigate to where you saved your HTML signature file and select it. Thunderbird will now pull the HTML file from this location and insert it into your emails.

NOTE: Make sure that the HTML file is stored somewhere that it won't be deleted. If your email signature file gets deleted, Thunderbird won't be able to reference it and it won't work.

4

Close out of your Settings and compose a new email. Your email signature will now automatically appear when composing a new email.

NOTE: When composing an email in Mozilla Thunderbird you will notice red borders around your email signature. This is normal and is Thunderbird highlighting the table structure of your email signature. These lines will not display once your email signature is sent.

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Thunderbird Signature Support

Frequently Asked Questions

Common Questions About Our Email Signatures

Everything you need to know about our email signature service. Can't find what you're looking for? Reach out to our support team.

Installing your email signature in Gmail is simple. After creating your signature, click the "Install in Gmail" button, and our system will guide you through a few quick steps to automatically set up your signature in your Gmail account.
Yes! Our email signature editor allows you to fully customize your signature. You can change colors, fonts, layout, and add your own images, social media icons, and promotional banners.
Absolutely! All our email signatures are fully responsive and tested across all major email clients and devices, including mobile phones and tablets. They'll look great no matter where they're viewed.
Yes, our team management features allow you to create, deploy, and update email signatures for your entire organization from a central dashboard. You can ensure brand consistency across all employee signatures.
No, there's no limit to the number of signatures you can create with your account. You can create different versions for various purposes or departments within your organization.