The list of emails that spam / delivery tests are sent to has been expanded to include 72 seed email addresses (from 29 emails). Additionally, since Gmail heavily weighs personal activity in its delivery algorithm, these new addresses include two pools of Gmail addresses to mirror the deliverability to Inquiries & above ("Interactive" - inboxes that open all emails sent to them) and to Prospects ("Non-interactive" - inboxes that don't engage with any received content). 

We have updated our voice blast system to utilize an updated algorithm, trained on real-world call samples, that isolates human speech audio and measures periods of speech and silence in the greeting to determine if the answering party appears to be a machine. If a machine is detected, the Voice Blast message will be held until the end of the recorded greeting (e.g. a beep), but if a machine isn't detected, the Voice Blast will be delivered as usual.

Based on feedback and performance, several improvements have been made to the HTML source code window to increase its load speed, enhance readability/workspace, and retain preferences.