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.
Open Mozilla Thunderbird and click the icon at the top left of screen, then click Settings.
Select Account Settings at the bottom left of the settings window.
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.
Create professional email signatures that make a lasting impression. Easy to customize, always looks perfect across all email clients.
Thunderbird Email SignaturesClose 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.
Copy your provided Signature Key. This may have been emailed to you, or you can access it from your Email Signature Rescue account.
Click the plus icon at the top left of the installer app to add a new email signature.
Click on the Select your email client drop down box and choose Thunderbird.
Click on the Select your email account drop down box and choose the email account you would like your email signature installed into.
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.
Check the boxes below for Insert for new and Insert for replies/forwards, then click the Install Signature button.
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.