That’s a real shame about Newton Mail. Anything that provides more user choice and adds innovation in a saturated market is a good thing in my book. I hope Essential open sources it, as well.

From TFA:

“As part of the company wind down, the security update for PH-1 released on February 3 is the last update from the Essential software team. Your PH-1 will continue to work but we will not be providing any additional updates or customer support. Current Newton Mail users will have access to the service through April 30, 2020. For developer fans, a prebuilt of our vendor image and everything else needed to keep hacking on PH-1 will be hosted on our github.”