I dropped Outrook many years ago after it hiccuped and lost my entire address book and all stored messages. It had hidden its file of "stuff" where my backups weren't finding it, so there was no way back. I know more about backups now, but don't use the Big O either.
Thunderbird works well, and doesn't preview stuff. Avast sits on the PC, and once or twice a day announces in that lovely female northern voice "Threat has been detected!" I then find a message in the inbox marked "VIRUS!" with the attachment removed.
It gives a warmer, more comfortable feeling. It doesn't catch them all - zipped files get through - but anything unusual gets a careful look-see before opening, and if I wasn't expecting a zipfile I delete 'em anyway.