My company sends transactional email from a real address as well, but there are some problems with this approach. As the post mentions, we get a ton of email intended for other people (like if we send "John Doe assigned you a task" and the person responds to us thinking John Doe will get it) and sometimes there's very sensitive or embarrassing information in the replies. I'm never quite sure how to deal with this because if I forward it on to the intended recipient, then they know I just read their personal email.<p>This is mostly just a problem of perception. I know that it's not my fault that I read an email which was sent to me, and I know that I can be trusted with the sensitive information. The problem is that my customers might not trust me as much as I trust myself, so by forwarding this mail on, I raise unjustified concerns about our security and trustworthiness.<p>On the other hand, one out of every hundred replies actually are meant for us, and our customers love the fact that it's so easy to reach us. That's why we don't use no-reply addresses, but it's not as easy of a decision as some people seem to think.