I get this tagline added to all my messages

[REDACTED]

This doesn't look right.  Looks like a virus added tagline:

---
This email has been checked for viruses by Avast antivirus software.
https://nam02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.avast.com%2Fantivirus&data=02%7C01%7C%7Cc819fdf95e8046383b8808d5903e82d2%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636573520505299191&sdata=GaL%2FqTeFtTnSDydboqk8tzGsXYU2mAJKXgHbX%2BZJPWg%3D&reserved=0

[Pondus]

Lots of info in FAQ section  >>  https://support.avast.com/en-us/article/Antivirus-email-signature

FAQ search and find    https://support.avast.com/

[REDACTED]

I wouldn't be unhappy with a simple "This email has been checked for viruses by Avast antivirus software" but a 200 character cryptic link like that worries me. 

You didn't say whether this is normal.  Please confirm or deny.

[stibi]

To my EMails this is added:


Diese E-Mail wurde von Avast Antivirus-Software auf Viren geprüft.
https://www.avast.com/antivirus

That's all ...

[DavidR]

Change the settings in the AvastUI > Components > Mail Shield > Customise > Behaviour - General and uncheck the 'Insert note into' options.

[REDACTED]

Change the settings in the AvastUI > Components > Mail Shield > Customise > Behaviour - General and uncheck the 'Insert note into' options.

I couldn't find an AvastUI.  In settings I found the following:

[REDACTED]

Change the settings in the AvastUI > Components > Mail Shield > Customise > Behaviour - General and uncheck the 'Insert note into' options.

I assume from you suggestion that I just just turn it off you don't think the bizarre link is something harmful.

[Asyn]

If you want/need a check, start a topic in V&W and post your logs there.
Instructions (basic diagnostic logs): https://forum.avast.com/index.php?topic=194892.0

[REDACTED]

Okay, I found an AvastUI, but it doesn't look like yours:

[DavidR]

Okay, I found an AvastUI, but it doesn't look like yours:

You have to follow the path I gave from first opening the AvastUI (user interface) at the bottom is the settings option.

Change the settings in the AvastUI > Components > Mail Shield > Customise > Behaviour - General and uncheck the 'Insert note into' options. 

Or to be clearer AvastUI > Settings > Components > Mail Shield > Customise > Behaviour - General and uncheck the 'Insert note into' options.
See extract from your image with the Settings marked