如何在Outlook 365 Web加载项中获取电子邮件的.eml或base 64? [英] How to get .eml or base 64 of an email message in outlook 365 web addin?

问题描述

我要创建一个Outlook Web加载项，我要在其中添加电子邮件及其附件列表的.eml和.txt吗?我对EWS，Outlook RestAPI和MS Graph API进行构建感到困惑.我尝试使用EWS，但是有两个问题:

I want to create an outlook web add-in ,in which I want .eml and and .txt of the email message and its attachment list? I am confused between EWS , Outlook RestAPI and MS Graph API to build it. I tried using EWS , but it had two issues:

1. 在何处获得这些凭据，(一个示例会有所帮助)

1. where to get these credentials ,(an example would be helpful)

service =新的ExchangeService{凭据=新的WebCredentials(OutlookEmailId，密码)

service = new ExchangeService { Credentials = new WebCredentials(OutlookEmailId, Password)

                 };

EWS现在已过时.

EWS are obsolete now.

那么获取电子邮件内容的正确方法是什么?谁能用简单的英语解释这些步骤.此外，任何示例都将对您大有帮助.

So what is the right way of getting the email message content ? Could anyone please explain the steps in plain english. Also, any example would be a big help to start.

我是这些集成和OAUTH概念的新手，请提出建议.我想朝着正确的方向努力.

I am newbie in these integration and OAUTH concepts, please suggest. I want to put my efforts in right direction.

推荐答案

1. EWS并不是过时的(并且不会使用一段时间)，只是基本的Auth已被弃用，这应该是Modern Addin中的一个问题.

您可以使用Graph获取消息的Mime内容(基本上是EML文件的内容)，例如 https://github.com/OfficeDev/Outlook-Add-in-SSO 具有非常全面的示例，您只需更改一些REST调用即可完成所需的操作.

You can get the Mime content of a Message (which is basically what is the content of an EML file) using the Graph eg https://docs.microsoft.com/en-us/graph/outlook-get-mime-message. To use that in a Addin you need to use make use of SSO see https://github.com/OfficeDev/Outlook-Add-in-SSO which has a pretty comprehensive sample you just need to change some of the REST call to do what you want.

在 https://gsexdev.blogspot.com/2019/05/outlook-addin-for-exporting-email-to.html (此限制为1MB)

如果您尝试超过1MB，则可以使用EWS的一些选项，请使用

If you trying to go past 1MB there a few options to take with EWS use the answer in How can I retrieve the full MIME message from an Microsoft Outlook Add-In?.

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