RegEx email

/^((?!\.)[\w-_.]*[^.])(@\w+)(\.\w+(\.\w+)?[^.\W])$/gim;

Just playing with Reg Ex. This to validate emails in following ways

• The email couldn't start or finish with a dot
• The email shouldn't contain spaces into the string
• The email shouldn't contain special chars (<:, *,ecc)
• The email could contain dots in the middle of mail address before the @
• The email could contain a double doman ( '.de.org' or similar rarity)

Groups

There was created 3 groups into this validations that could be used for custom purposes or replacements

mailname@domain.com

• First group takes the first string with the name of email $1 => (mailname)
• Second group takes the @ plus the domain: $2 => (@domain)
• Third group takes the last part after the domain : $3 => (.com)