Right before launching Mailbrew, we've decided to put 2 little vanity metrics on our landing page: how many active digests (we call them "brews") we send, and how many emails we've sent in total.
Today we've crossed two big milestones:
Before deciding to completely remove the tracking pixel from our emails, we calculated an open rate of 95%, so one more reason to believe these are quite staggering results.
So far we've had just a couple of minor hiccups (users not receiving their brews for ~1h), but aside from those we're also really happy about how solid the whole infrastructure is.
We've also been able to add a new source to Mailbrew in just one day (the COVID-19 source) and we're working hard on new features right now.