在平常的工作中，为了方便会议开展我们可能会使用邮件日程发送和会议邀请功能，当您使用outlook客户端发送日程邮件时，若接收方客户端不支持Rich Text格式并且收到具有Winmail.dat附件的消息，可能会出现会议邀请无法识别问题。
In daily work, in order to facilitate meetings, we may use email schedule sending and meeting invitation functions. When you use the Outlook client to send schedule emails, if the receiving client does not support Rich Text format and receives messages with Winmail.dat attachments, there may be problems.
为解决该问题，可以在outlook客户端设置发件格式为“html”以防止Outlook发送带有Winmail.dat附件的电子邮件。
To solve this problem, you can set the sending format to 'HTML' in the Outlook client to prevent Outlook from sending emails with a Winmail.dat attachment.
日程格式修改方法如下：
The method for modifying the schedule format is as follows:
一、windows系统配置
一、Windows system configuration
1.点击【文件】进入账户信息页面，单击【选项】
1.Click [File] to enter the account information page, click [Options]
2.点击【邮件】按钮
2.Click the [Mail] button
3.点击“使用此格式撰写邮件”后的选择下拉键，选择“HTML”格式。
3. Click the dropdown button after 'Compose messages in this format' and select 'HTML' format.
二、MACBOOK system configuration
1.点击【设置】
1.Click on [Settings]
2.选择【电子邮件】-【撰写】
2.Select [Email] - [Write]
3.在“HTML”选项卡下【格式和账户】勾选“默认以 HTML格式撰写邮件”
3.Under the 'HTML' tab, select 'Format and account' and select 'Compose messages in HTML by default'
