In this Forum, you will learn how to disable Avast's email signature on your email account. This is a 100% legal way to remove Avast email signatures. Read the following steps:

1. Launch Avast antivirus on your computer and go to the top-right corner.

2. Click on the menu and go to settings.

3. Click on the core shields option and press on configure shields settings.

4. Now, simply untick the box next to add or remove the Avast email signature to the end of the mail.

For more read - https://emailspedia.com/how-to-turn-off-avast-email-signature/