elektrined

Local IMAP, SMTP, CalDAV, CardDAV, and WebDAV daemon.

Install

curl -fsSL http://gangstalkers.net/elektrined/install.sh | sh

Local ports

Web UI
127.0.0.1:8080
IMAP
127.0.0.1:1143
SMTP
127.0.0.1:1025
CalDAV / CardDAV / WebDAV
127.0.0.1:8081

Sign in at http://127.0.0.1:8080, then connect your mail or calendar client to localhost.