Well the Hotmail (webmail) account (unless a pop3 account) won't be scanned when it comes down from hotmail to windows live mail as it doesn't use the pop3 protocol.
SSL is secure encrypted email and as such designed to keep out prying eyes and clean notes. This SSL usually uses a different port, 456 I believe and as such won't be scanned as avast is monitoring ports 25, smtp, 110, pop3, 119 nntp (news/usenet) and 143, IMAP email.
So you need to check the account settings for your Accesscomm account, check the outgoing and incoming email ports and if the use SSL options are enabled or not.