Adding an email signature to Thunderbird email client HTML email signature installation guide

Adding an email signature to Thunderbird email client is important for several reasons. An email signature is a block of text or an image that is automatically added to the end of your email messages. It can contain your name, contact details, logo, social media links, or any other information you want to share with your email recipients. Some of the benefits of adding an email signature to Thunderbird email client are:

  • It can make your email look more professional and credible, as it shows your identity and affiliation.
  • It can help you build your personal or business brand, as it showcases your logo, slogan, or mission statement.
  • It can increase your engagement and conversion rates, as it invites your recipients to visit your website, follow your social media profiles, or contact you for more information.
  • It can save you time and effort, as it eliminates the need to type the same information over and over again.
  • It can create a positive impression and a lasting memory for your recipients, as it expresses your gratitude, appreciation, and best wishes.

Step 1 — Create your signature

Create your email signature in

Step 2 — Open Thunderbird signature settings

Open Mozilla Thunderbird

Click on your email account name e.g. and then on View settings for this account option under the Accounts section.

Check the box for Signature text: ☑️ Use HTML (e.g., <b>bold</b>)

Step 3 — Paste signature

Return to in your browser and click the yellow copy HTML button

Return to Thunderbird settings and paste into the box below Signature text and click OK

Select Write a new message

Your Mirosign email signature will appear in the new email window like this:

Any further questions?

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