imap - IMAP UID 总是数字吗？

Question

IMAP UID 是否保证为数字？我读过 RFC3501 中的部分，它说:

Unique identifiers are assigned in a strictly ascending fashion in the mailbox; as each message is added to the mailbox it is assigned a higher UID than the message(s) which were added previously.

但是 UID 是否有前缀或后缀？例如，UID 是否为 mail_14，下一条消息为 mail_15？

答案:IMAP UID 是一个唯一的非零整数。

Answer 1

您可能想阅读 RFC3501 中定义 UID 的部分:

uniqueid        = nz-number
                ; Strictly ascending

第 91 页。