15
17
21
23
34
33
32
30
43
42
40
38
8
8
7
8
Quarter 1
Quarter 2
Quarter 3
Quarter 4
Mobile
WebMail
Desktop
Undetected
Email Opens by Environment
per Quarter 2011
15
17
21
23
34
33
32
30
43
42
40
38
8
7