I'm looking for a self hosted email server recommendation. I know you can have one running on Synology NAS system but I'm really interested what else is out there and I'm essentially want to hear from people that can share their experience in this area. I've been using Qnap Nas system and I think they no longer support email server on their NAS systems. I like system that you can manage yourself and one that is not dependent on any of the cloud providers. If there is a topic on this subject already please point me to it. Any thoughts?