At this time, you may select one reply-to email address in the email header. I can see the need for more than one. I will be make sure to pass the idea as a feature request on your behalf.
In the meantime, I would suggest using a distribution list email address as the reply-to. Another option might be to set up mailto links within your email campaign itself. See guide: Add a Mailto Link in the Third-Generation Editor.
I couldn't find anything else on multiple reply to addresses since you answered in May 2017. Did Constant Contact ever get around to setting it up?
Thank you for reaching out to the Constant Contact Community. It's my pleasure to assist you today.
At this time, we are still tracking requests for this type of functionality. I have submitted your feedback on the request and we are happy to assist you anytime you need.
Thank you for choosing Constant Contact. We truly appreciate you!
That's a great question! I can understand how helpful it would be to to have a reply email go to more than just one address. With that said, I do apologize this feature is not yet available. I apologize for any inconvenience caused by this feature not being available. However as previously mentioned in this thread it is a feature request we would be happy to track on your behalf. There is also still the workaround of using a distribution list as the reply to address so a reply can get sent to multiple people.