After several more or less happy years with Thunderbird as my default email program, I have now made the move “back” — I am now using MS Outlook. There were some mysterious crashing problems with Thunderbird: after the latest 3.x.x update, the damned program would not close without crashing. But the ultimate reason was support for synchronization and compatibility. Outlook calendar is “better” from my perspective, due to the support it receives from third parties: it is easier to make it sync with my various mobile devices and online calendars. There was the Lightning extension for Thunderbird, but even together, they just could not compete with the flexibility and range of features in Outlook (I am using Office 2007).
One obvious issue, though, that I have found out in Outlook. It does not include option to send automatically a “blind carbon-copy” (bcc) to a message of your choice — this is something that I need, because of the multiple email systems that need to keep in sync). I tried various solutions to come around this, including installing and editing some Visual Basic code, but to no functional result. There were several commercial add-ons that promised to do the job, but really: paying 20-30 dollars/euros just to get auto-bcc feature? Finally I did find this free component, Alan McGrath’s AutoBCC:
This seems to work. You input the bcc: address into Tools > Options > AutoBCC settings (and it does not appear in the actual bcc field of your message that confused me a bit), but it seems to send the bcc copy nevertheless just fine. Hope it will work for you, too.