同一电子邮件的电子邮件ID更改？(Email ID for the same email changes?)

同一电子邮件的电子邮件ID更改？(Email ID for the same email changes?)

我最近遇到一个问题，即电子邮件的ID发生了变化。

我有一个应用程序，每小时搜索邮箱，我存储电子邮件ID，以防止处理相同的电子邮件两次（扫描重叠，因此我不止一次看到相同的电子邮件）。

知道什么可以导致这种变化吗？

I'm facing an issue lately that the id of an email changes.

I have an application that search the mail box on an hourly basis and I store the email id in order to prevent processing of the same email twice (the scans overlap hence I see the same emails more than once).

Any idea what can cause this change?

最满意答案

我理解你的意思是API返回的ID，就像这个示例代码一样; https://developers.google.com/gmail/api/v1/reference/users/messages/list#try-it

消息的ID不会自行更改。

如果将电子邮件移出帐户并返回（通过IMAP），则会获得新ID。

此外，如果您检查同一封电子邮件但在其他Gmail帐户中，则ID会有所不同。 该ID仅适用于每个帐户。

也许你使用message-id是有用的？ message-id唯一标识任何电子邮件，此ID位于发送服务器生成的电子邮件标头中，不会更改。 您可以使用rfc822msgid在Gmail中搜索它：

希望这能回答你的问题，但如果没有，也请告诉我们。 ^^

I understand you mean Google's ID which is returned by the API like with this example code; https://developers.google.com/gmail/api/v1/reference/users/messages/list#try-it

That ID of a message doesn't change by itself.

If one moves the email out of the account, and back in (via IMAP), then it would get a new ID.

Also, if you check the same email but in a different Gmail account, the ID will be different. the ID is unique only per account.

Perhaps it is useful for you to use the message-id? The message-id uniquely identifies any email, this ID is in the email header generated by the sending server and does not change. You can search for it in Gmail with rfc822msgid:

Hope this answers your question, but also let us know if not. ^^