Hello Joe,
You can find answer to your question together with your another post here https://support.avg.com/answers?id=906b0000000Dq8n.
Please try keep whole conversation in one question/thread to speed up resolution.
Thank you.
Thank you Bhuvaneswary for your advice. I shot down Component > email protection and Thinderbird works. Should I keep it off but I won't have any email protection.
Thanks waiting for you suggestion
Joe. Also in future please refrain from carrying out multiple topic postings on basically the same subject! You won't obtain an answer to your query any faster!.
AVG Guru