Per Debian policy and precedence of the email notification utility, you'll install biff, the command-line email notification utility:

<https://www.debian.org/doc/debian-policy/ch-binary.html#the-...>

<https://packages.debian.org/trixie/biff>

I know that if you want `fd` (https://github.com/sharkdp/fd) you need to `apt install fd-find` and which installs the binary `fdfind` (!).

I honestly don't know. Which is... Not Great.