<page_title> List of Oricon number-one singles of 2011 </page_title> <section_title> Chart history </section_title> <table> <cell> "Saisho no Mail" (最初のメール Saisho no Mēru, First E-mail) <col_header> Singles </col_header> </cell> </table>
Saisho no Mail debuted in number one on the Oricon Singles Chart.