How to get ThreadId or MessageId of gmail compose message with InboxSDK
问题 I am completely new in Making Extension. Currently, I am trying to work with InboxSDK library to track mail. I wanted to get compose message's TheadID or MessageID but every time it's giving me error that GetmessageID() is not a function. The tries , I did till now is as per below. InboxSDK.load(2, 'my inboxsdk id').then(function(sdk){ // the SDK has been loaded, now do something with it! sdk.Compose.registerComposeViewHandler(function(composeView){ composeView.insertHTMLIntoBodyAtCursor('