BCC recipients do not receive the email, although recipients listed under TO: and CC: do. Any hints?

BCC can be tricky with multidrop/catch-all style POP3 accounts. It is not a problem of POPcon specifically. The general problem with BCC is that the BCC recipient is (for obvious reasons) not mentioned in the normally visible standard email headers.

With most ISP email servers though, the original recipient (BCC) information is kept in a special non-standard mail header field and normally POPcon will find it there. If you send us a copy of the email headers of one of those emails that POPcon could not correctly address we can advise you which settings to chose in POPcon. You’ll find the email headers in Outlook when you open such a mail and select VIEW .. OPTIONS.

Even if POPcon currently does not know about your specific email header we might be able to change POPcon to find the information in the next version and we definately would like to know about it!

Under some circumstances (mail servers in between and their configuration) the BCC information is completely stripped from emails when they arrive at the pop3 connector (such as POPcon). Under such circumstances it is not possible for any pop3 connector to distribute the email correctly. About the only thing that can be done about this is to switch to individual POP3 mailboxes for each user.