GSuite 附加组件 - Gmail 检测收件人电子邮件更改
GSuite Add-ons - Gmail Detect Recipient Email Change
对于 Gmail，使用 GSuite 附加组件是否有一个事件可用于在收件人电子邮件已 added/removed 时触发回调？
is there an event that can be used to fire a callback when a recipient email has been added/removed?
答案：
不，没有。 There are no event objects for Gmail.
进一步阅读：
对于 Gmail，使用 GSuite 附加组件是否有一个事件可用于在收件人电子邮件已 added/removed 时触发回调？
is there an event that can be used to fire a callback when a recipient email has been added/removed?
答案：
不，没有。 There are no event objects for Gmail.