- bi-atomprocedure
A single atom (RFC 5322 section 3.2.3), such as "jdoe": one or more letters, digits, or the punctuation marks !#$%&'*+-/=?^_`{|}~, folded to a string.
A single atom (RFC 5322 section 3.2.3), such as "jdoe": one or more letters, digits, or the punctuation marks !#$%&'*+-/=?^_`{|}~, folded to a string.