+repeats the group contents below at least once:
\s*any whitespace character, repeated any number of times
Character Class[\w\.\+\-]+ +matches at least one character from the set below:
\wany word character
\.the literal . (4610 / 568 / 2E16)
\+the literal + (4310 / 538 / 2B16)
\-the literal - (4510 / 558 / 2D16)
@domainthe literal text @domain (case sensitive) \.the literal . (4610 / 568 / 2E16)
comthe literal text com (case sensitive) \s*any whitespace character, repeated any number of times
;?optionally matches the literal ; (5910 / 738 / 3B16)
\s*any whitespace character, repeated any number of times