How to install a signature in Thunderbird? | My Signature App Help Center

Note: Make sure you use Google Chrome or Mozilla Firefox during installation.

Then, please watch our installation guide for the Thunderbird provided below:

Or follow the next steps:

Step 1.

After creating your email signature, click Save signature button under the signature preview.

Or, if you have saved your signature, find your signature on the Dashboard and click Install button.

Step 2.

Select the Source code in the list of email clients and click Copy source code button.

Step 4.
Then, open Mozilla Thunderbird.

Step 5.
Click on your email account name, e.g., [email protected], and click Account Settings.

Step 6.
In the Account settings window, go to the Signature text section.

Step 7.
To use HTML code, you need to check the Use HTML box.

Step 8.
Now, you can paste your copied source code to the Signature text.

Step 9.
Go to the main view of Thunderbird and click Write to create a new email message.

Viola! Every new email, reply, or forward message you compose will have your Thunderbird email signature.

Important note: When you compose a new message, it has many red lines around the layout of the signature, like in the screenshot above. That's okay. Thunderbird adds these red borders to show you HTML tables and cells on which the signature is constructed. The table has no pixel border size, so you will not see the table's construction. However, those are not part of the HTML and should not appear in the sent/received message. For more information, please check the guide. Thunderbird has red borders inside and around the signature.