Historical estimate

Gmail is available in 2013

Probability:
99.978%
Odds:
4,540 to 1
dBan
+36.6 dBan

Google reported 99.978% average Gmail availability in 2013, equivalent to about 99,978 available moments in every 100,000.

Calculation

p ≈ 0.99978 reported annual availability

Assumptions

The model samples a moment uniformly from the historical provider-reported aggregate. A person’s network, device, login, account access, and current Gmail availability are outside the measure. The figure is not a current service-level promise.

Sources

  1. Google Gmail Blog: Staying at the forefront of email security and reliability 2013 availability reported 20 March 2014