Upstream svn snapshot could provide us with a systemd service unit https://svn.code.sf.net/p/squirrelmail/code/trunk/imap_proxy/scripts/imap_proxy.service Since this package is rarely updated, perhaps it also makes sense to make a date-snapshot ebuild to pull in latest wins? Changelog doesn't have any version numbers, hard to tell what current stable 1.2.7 has or does not have https://svn.code.sf.net/p/squirrelmail/code/trunk/imap_proxy/ChangeLog
Package removed.
I wonder what's a replacement for this. I still for some reason have to have it running for Roundcube -> Dovecot link, I forget why.