...but inquiring minds want to know.
A meshulach (Hebrew: משולח) (plural: meshulachim) or SHaDaR (Hebrew: שד"ר, acronym for SHelichei DeRabonan - an emissary of the rabbis; according to others, the acronym is SHelichah DeRachmanah - an emissary from God) is a rabbinical emissary sent to collect charity funds (chalukah). In the original meaning it was for the resque of the Yishuv ha-Yashan of Eretz Yisrael, the funds were distributed by the Kollelim in form of chalukah.
He goes from door to door collecting charity.