avast logo and text at end of emails

How do I stop the message

This email has been checked for viruses by Avast antivirus software.
www.avast.com

from displaying at the end of my emails?

You can disable it in the mail-shield settings.

AvastUI > Settings > Active Protection > Mail Shield - Customize > Behavior and uncheck the Insert not into clean message (outgoing).

OK thanks, but I don’t like those captchas that you use on this forum, I never get them on the first try. There should be no need for them after I have signed in. Please remove them.

Yes there is need for them unfortunately.
They are there to prevent spamming.
But they are only there the first 3 posts.

You’re welcome.

Unfortunately a necessary measure to restrict spammers and to be effective they have to be difficult. But you should now be over that particular hurdle now.