I'm working with Microsoft Outlook 2016, and I just received a mail where I've been put in blind copy. This is quite dangerous because the people in the `To` and `CC` list should not be able to contact me, and when I reply all to this mail I risk exposing my e-mail address to those people, which I don't want.

In order to avoid this, I'd like some message box to appear whenever I press the `Reply all` button of an e-mail where I'm in blind copy.

I've just checked the rules and I don't find a way to get this done, and creating a rule for marking such mails in some way also seems not to be possible: here are the relevant conditions for creating rules I've found:

```
sent only to me
where my name is in the To box
where my name is in the Cc box
where my name is in the To or Cc box
where my name is not in the To box

```

As you see there is no `where my name is in the Bcc box` (which would be what I need).

I can invent a workaround, like creating another inbox, using the `where my name is in the To or Cc box`, redirect all mails to that inbox, so that all messages in blind copy stay in my regular inbox, but I don't like this workaround.

Does somebody have an idea on how to help me?