It misses the very common mistake of typing a comma instead of a dot. Otherwise, yeah, most people would be better served by a library that detects domain typo

It misses the very common mistake of typing a comma instead of a dot. Otherwise, yeah, most people would be better served by a library that detects domain typos like https://github.com/mailcheck/mailcheck https://github.com/mailcheck/mailcheck than spending time on regexes.