email - 在 RFC2822 中，“邮箱列表”和“地址列表”有什么区别？

Question

RFC2822定义了以下地址规范类型：

address         =       mailbox / group

mailbox         =       name-addr / addr-spec

name-addr       =       [display-name] angle-addr

angle-addr      =       [CFWS] "<" addr-spec ">" [CFWS] / obs-angle-addr

group           =       display-name ":" [mailbox-list / CFWS] ";"
                        [CFWS]

display-name    =       phrase

mailbox-list    =       (mailbox *("," mailbox)) / obs-mbox-list

address-list    =       (address *("," address)) / obs-addr-list

我已经多次查看规范，并没有发现 和 之间的功能或实际mailbox-list差异address-list。有什么区别？

Answer 1

不同的是一个“地址”可以是一个“组”。一个组可能是：

undisclosed-recipients: ;

例如（例如在密件抄送中看到的）。