RegEx for multiple email validation

For validating multiple emails in TextBox, we can use following regular expression. We are separating emails by using delimiter ';'

^((\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*)\s*[;]{0,1}\s*)+$

If you want to use delimiter ',' then use this

^((\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*)\s*[,]{0,1}\s*)+$

and if you want to use both delimiter ',' and ';' then use this

^((\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*)\s*[;,.]{0,1}\s*)+$

So by using above regular expression you can validate single email as well as multiple emails.

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