According to my research, no. You CAN deal with inbound mail but it doesn't use a single "container" object for all of its data. It is more of a multi-file scenario. It uses SMTP for outbound (like Outlook and CDO) and uses either IMAP or POP3 for inbound mail. Thunderbird is apparently based on a Firefox "core" for a lot of its code, so you know it will have web-like controls. I've never used it but when I was still working for the Navy, they allowed Thunderbird on the government computers. To do that, you know it had to pass muster through some really picky IT guys & gals.