What happens is, when you install Avast antivirus on your computer, and after the installation when you start sending emails, it automatically inserts Avast email signature at the footer of the outgoing email. The message reads:
I’m protected online with Avast Free Antivirus. Get it here — it’s free forever.
OR
“This email has been sent from a virus-free computer protected by Avast. http://www.avast.com”
OR
“Virus-free http://www.avast.com”
The Avast hijacking your email footer is a severe How to remove Avast email signature from my email violation of the trust, and it appears to be stupid while sending essential emails.
Fortunately, it is possible to turn off Avast Email Signature from emails that you’re sending from your system using any web client.
How to Remove Avast Email Signature
This is a very old issue as it was reported first in 2015, but the users are still complaining about the problem. If you’re experiencing the same issue, then here’s how to disable it:
1. Launch the Avast Antivirus program.
2. Click on the Menu option available at the top-right side and then choose Settings.
avast free antivirus settings
3. Next, you need to go to Protection > Core Shield.
4. Now on the right side, you need to scroll down to the ‘Core shield settings‘ section. Under this, you need to Switch to Mail Shield tab.
mailhelps 