The Resent-Bcc field inherits resent-bcc StructuredField and handles the Resent-Bcc: header field in the email.
Sending resent_bcc to a mail message will instantiate a Mail::Field object that has a ResentBccField as its field type. This includes all Mail::CommonAddress module instance metods.
Only one Resent-Bcc field can appear in a header, though it can have multiple addresses and groups of addresses.
mail = Mail.new mail.resent_bcc = 'Mikel Lindsaar <mikel@test.lindsaar.net>, ada@test.lindsaar.net' mail.resent_bcc #=> ['mikel@test.lindsaar.net', 'ada@test.lindsaar.net'] mail[:resent_bcc] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::ResentBccField:0x180e1c4 mail['resent-bcc'] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::ResentBccField:0x180e1c4 mail['Resent-Bcc'] #=> '#<Mail::Field:0x180e5e8 @field=#<Mail::ResentBccField:0x180e1c4 mail[:resent_bcc].encoded #=> 'Resent-Bcc: Mikel Lindsaar <mikel@test.lindsaar.net>, ada@test.lindsaar.net\r\n' mail[:resent_bcc].decoded #=> 'Mikel Lindsaar <mikel@test.lindsaar.net>, ada@test.lindsaar.net' mail[:resent_bcc].addresses #=> ['mikel@test.lindsaar.net', 'ada@test.lindsaar.net'] mail[:resent_bcc].formatted #=> ['Mikel Lindsaar <mikel@test.lindsaar.net>', 'ada@test.lindsaar.net']