I use sogo for that. Includes a web interface as well as proper authentication mechanisms and sync integration. Is also lightweight and even allows LDAP integration oif you like.
Also caldav support for tasks and events as well as carddav for contacts. Also allows connections to any email account for sharing calendar events and being invited via email.








I have long suspected that its a techies responsibility to take care of their immediate friends and family in regards to self hosting. SoiI usually offer that service for free to my extended family. I usually tell them they have to rely/trust someone, might as well be me and if it weren’t them I would charge customers X money for that service monthly. So it becomes a gift and something personal and they feel taken care of and when the dreaded “help me with my email” call comes you just pop open their account without trying all the password on that crusty sticky note and look into it. I especially love those “they claim they didn’t get that email” calls. Pop open the log and send the excerpt of their server accepting the email to the claimant and boom number one of all the standard excuses is done for. I once saved my mums job that way.