Will I lose emails if my Exchange Server happens to be down when POPcon tries to send emails there?

No, emails will never be lost. POPcon uses the fully secured SMTP protocol to forward emails to Exchange. In this protocol the receipt of every single message must be acknowledged by the receivin server (Exchange) with an OK code. If POPcon can't reach your Exchange server or does not receive the OK code acknowledgement it will simply retry until the server is reachable again. POPcon stores all messages in temporary files on your harddisk - your emails are safe even if you shutdown the machine that runs POPcon or the Exchange server while POPcon is in the middle of a transfer to Exchange.

We designed POPcon to never lose any email under no circumstances whatsoever - even when you yank the power cord while POPcon downloads emails or while it forwards emails to exchange.