When using lychee on a LaTeX book repository the following email addresses were not picked up correctly with the curly brackets.

https://github.com/SverigesSandareamatorer/SSA-Akademin/blob/32bef56e654e4be9b2a3e573a337a97f70d79650/koncept/foreword.tex#L156
Picks up texttt{[email protected]

https://github.com/SverigesSandareamatorer/SSA-Akademin/blob/32bef56e654e4be9b2a3e573a337a97f70d79650/koncept/tryckort.tex#L58
Picks up [email protected]}{[email protected]