MarsSeed [1] filed a deletion request for ruby-mailcatcher [2]: Not used by anyone for years, broken for quite some time, hard to maintain (also upstream has been sporadic and infrequent with their release schedule). Former owner suggested using nodejs-maildev instead of this (available on AUR). [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/ruby-mailcatcher/