Thanks Chris. It'd be really useful if we could add a `getElement()` method to `ThreadRowView` so that we can grab other data attributes. At the moment, we're using the "msg-f" ID to query the Gmail API to determine the SMTP ID of each message in a user's inbox. We can't use the legacy style IDs are they appear to be thread IDs and are not unique to a particular message.
We're building an email archiving facility and need a unique identifier for each message (but one that carries across multiple inboxes - e.g. when the same email is sent to multiple users). From what we can see, the only way to get the SMTP ID for each message in a list is to query Gmail's API. This data becomes available (in Gmail and via your SDK) when a user views a message, but not when they are browsing an inbox/list.
Thanks again, Chris.