Google Postmaster Tools V2, in both its user interface and API, offers information that they call a “Deliverability Analysis” (or “DeliverabilityStatusVerdict”) which attempts to provide plain language feedback and guidance on how Gmail recipients feel about your email messages. And, if that sentiment is negative, or if you’re failing technical checks, they include information on steps you can take to help address the situation, in hopes of allowing you to be able to maintain (or regain) placement in the inbox.The API calls this DeliverabilityStatusVerdict. In the Google Postmaster Tools user interface, it is referred to as “Deliverability Analysis.”This information is...