Well I use Firefox and Thunderbird, but they are in no way embedded, they are individual stand alone applications.
So if Opera Mail is a separate installation, then it might be considered like thunderbird or outlook express.
The entries in the avast SSL Accounts indicate that the opera mail is an email client, so it should work in the same way as thunderbird and outlook express.
First I would suggest opening comodo and deleting any rules for avast as we have seen instances of comodo blocking avast. That should force comodo to ask permission again for the avast elements that connect to the internet (avastSvc.exe and avast.setup, .etc).
If that doesn't resolve it - Your first post says you started off with 7.0.1407 and then updated to 7.0.1426, so my suggestion would be to do a clean install of avast (that is likely to be the best/quickest option):
- Download the latest version of avast, 7.0.1426
http://files.avast.com/iavs5x/avast_free_antivirus_setup.exe and save it to your HDD, somewhere you can find it again (if you didn't save your last download). Use that when you reinstall.
- Download the avast! Uninstall Utility, aswClear.exe
find it here and save it to your HDD (it has uninstall tools for 5.x, 6.0.x and 7.0.x).
- 1. Now uninstall avast! (using add remove programs, if you can't do that start from the next step), reboot.
- 2. run the avast! Uninstall Utility from safe mode, first for 6.x if previously installed and then for 7.0, once complete reboot into normal mode.
- 3. install the latest version, reboot.