[e7mac]

True. I was thinking about a tool that would give you a list of regexes, ranked by some factor that aims to get at the regex pattern that'll be useful. For example, if I gave it, [[e-mail], [e-mail]] it would give all kinds of regex patterns, but ideally point to [a-z]@[a-z].com

[logn]

I think you need to consider more specifically what you want. Another possible regex would be /name2?@(?:som)?e(mail|thing)\.com/ or even /(name@email\.com|[e-mail])/

I was able to find this: https://github.com/noprompt/frak