Starting January 2020, there will be a change in statuses of campaign events. Due to standardization, we will rename the enqueued and enqueue_failed statuses to sent and send_failed respectively.
Delivery failure statuses in emails will also be standardized, and statuses hard_bounced and soft_bounced will be used instead of current dropped and bounced status, to inherit the logic from the ESP and use conventional naming.
This will also introduce a change to all Mailgun integrations, that will start using mailgun’s new webhook routes (no user action required). This change will impact any analysis or customer filter in campaigns that is using the campaign events mentioned above. To change the filters to count both old and new naming, change the filters to include both statuses using IN selector.