! Date
! Notes
|-
| Thunderbird 38.0.1
| June 11
| [https://www.mozilla.org/en-US/thunderbird/38.0.1/releasenotes/ Release Notes]
|-
| Thunderbird 31.7.0
| May 12
| [https://www.mozilla.org/en-US/thunderbird/31.7.0/releasenotes/ Release Notes]
|-
| Thunderbird 31.6.0
| March 31
| [https://www.mozilla.org/en-US/thunderbird/31.6.0/releasenotes/ Release Notes]
|-
| SeaMonkey 2.33.1