I use Thunderbird email client and gmail.com. I’m Getting SPAM in Subject header with no message body displayed. It doesn’t seem to be Thunderbird or gmail so I’m wondering if this is Avast! doing this. and how to stop mis identifying my email.
What avast version are you using (Free/Pro/AIS/Premier) ?
What program version number (latest 9.0.2021) ?
I don’t believe this is in the avast free version, but may be in other versions