Update from mailbox blog:
Scaling at Mailbox continues in earnest, and the line is moving faster every day.
During its first week Mailbox delivered 50 million emails. Currently, the service is delivering 50 million emails every day. That is an incredible number for a brand new app. For comparison?s sake, Twitter took three years to reach the number of daily messages that Mailbox reached in less than four weeks. Of course, Twitter?s network started from scratch while Mailbox taps into an existing fire hose. Nevertheless, it?s been a massive undertaking to scale 40x faster without a fail whale to lean on.
A critical part of Mailbox scaling is its brand new infrastructure. Mailbox relies on servers in the cloud to do things like send push notifications, download email as fast as possible, and handle ?snoozed? messages. Software that is server-based is susceptible to being overloaded, and we want to keep this from happening. This is email, after all, and it needs to work reliably. This is why we still have a line. If you?re waiting in line, know that we?re working as hard as possible to get Mailbox in your hands soon.
As we continue to scale, we?re also hard at work on new product features and growing our user support. To this end, user feedback continues to be incredibly helpful. Thanks for letting us know what you love, what you don?t, and what you want for your Mailbox. It?s making a difference.