清单中的 Outlook Web 加载项激活规则
Outlook web add-in activation rules in manifest
当邮件被加密或签名时，我无法激活我的加载项。
它适用于常规消息，但对于加密或签名的消息，该按钮只是变灰。
我已经试过了，但没有成功：
<Rule xsi:type="ItemIs" ItemType="Message" FormType="Read" ItemClass="IPM.Note.Secure" IncludeSubClasses="true" />
<Rule xsi:type="ItemIs" ItemType="Message" FormType="Read" ItemClass="IPM.Note.Secure.Sign" IncludeSubClasses="true" />
SMIME 加密或签名邮件目前不支持 Outlook 中的加载项。如需支持，请在 UserVoice
中请求此功能
Outlook doesn't activate add-ins in read form for certain types of messages, including items that are attachments to another message, items in the Outlook Drafts folder, or items that are encrypted or protected in other ways.
当邮件被加密或签名时，我无法激活我的加载项。 它适用于常规消息，但对于加密或签名的消息，该按钮只是变灰。
我已经试过了，但没有成功：
<Rule xsi:type="ItemIs" ItemType="Message" FormType="Read" ItemClass="IPM.Note.Secure" IncludeSubClasses="true" />
<Rule xsi:type="ItemIs" ItemType="Message" FormType="Read" ItemClass="IPM.Note.Secure.Sign" IncludeSubClasses="true" />
SMIME 加密或签名邮件目前不支持 Outlook 中的加载项。如需支持，请在 UserVoice
中请求此功能Outlook doesn't activate add-ins in read form for certain types of messages, including items that are attachments to another message, items in the Outlook Drafts folder, or items that are encrypted or protected in other ways.