Ruby Email validation with regex

Question

I have a large list of emails I am running through. A lot of the emails have typos. I am trying to build a string that will check valid emails.

this is what I have

Answer 1

Yours is complicated indeed.

VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

The above code should suffice.

Explanation of each piece of the expression above for clarification:

Start of regex:

/

Match the start of a string:

\A

At least one word character, plus, hyphen, or dot:

[\w+\-.]+

A literal "at sign":

@

A literal dot:

\.

At least one letter:

[a-z]+

Match the end of a string:

\z

End of regex:

/

Case insensitive:

i

Putting it back together again:

/\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

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