The link went to linuxexpert.org, which is the organisation rather than
the project. Someone reading a sign-in page and following it wants the
software's own site, not its publisher's.
Checked that https://ihasmail.org answers 200 before putting it in front
of everyone who reaches the instance -- a dead link on a sign-in page is
worse than none.
The README badge still credits LINUXexpert.org, which is the right place
for attribution and was not part of this.