Email Validation for SharePoint list column

-
Please use the below formula in [Column validation] of the list column edit section.

Please replace the [Email] with your column name.

Formula:
---------------------------------------------------------------------
=AND(
    ISERROR(FIND(" ", [Email],1)),
    IF(ISERROR(FIND("@", [Email],2)),
        FALSE,
        AND(
            ISERROR(FIND("@",[Email], FIND("@", [Email],2)+1)),
            IF(ISERROR(FIND(".", [Email], FIND("@", [Email],2)+2)),
                FALSE,
                FIND(".", [Email], FIND("@", [Email],2)+2) < LEN([Email])
            )
        )
    )
)
------------------------------------------------------------------------
 

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