Time to Inbox
Time to Inbox (TTI) is our live measure of email delivery speed: how long an email takes to reach the inbox after it leaves our servers. We send real test messages to Gmail, Yahoo and Outlook every 15 minutes and record how long each one takes to land. This is live data, measured the same way every time.
Time to inbox by provider
Response time over the window. Every line shares one scale, so a faster provider sits lower than a slower one.
TTI is measured from the moment we hand a message to our outbound servers to the moment it appears in the destination inbox, taken from the message's own timestamps. Only successful inbox deliveries count toward these numbers.
Why email delivery speed matters
For password resets, login codes and order confirmations, email delivery speed is part of the experience. A message that lands in a couple of seconds feels instant. One that takes minutes leaves people waiting, retrying, or assuming it never arrived.
We keep these times low by running our own outbound infrastructure across an anycast network, routing each message through the nearest data center and the cleanest IP for the destination. The numbers above are the result, published live rather than promised in a pitch.