The data displays e-mail inbox placement and spam rate in the U.S. from 2nd quarter of 2015 to 2nd quarter of 2018. The source found that 85% of commercial e-mails reached their destination inbox in the last measured quarter in the U.S.
Q2 2015 | 78 | 6 | 16 |
Q3 2015 | 80 | 6 | 15 |
Q4 2015 | 73 | 5 | 22 |
Q1 2016 | 68 | 5 | 27 |
Q2 2016 | 69 | 8 | 24 |
Q3 2016 | 73 | 8 | 19 |
Q4 2016 | 79 | 8 | 13 |
Q1 2017 | 79 | 8 | 14 |
Q2 2017 | 77 | 7 | 17 |
Q3 2017 | 81 | 6 | 13 |
Q4 2017 | 81 | 7 | 12 |
Q1 2018 | 85 | 7 | 8 |
Q2 2018 | 85 | 7 | 8 |