Jörg K ({{mozillians|jorgk}}) <jorgk@jorgk.com>
: Member of the 2016 Thunderbird Council, code manager for Thunderbird 52 releases (as well as beta and aurora channels), first Thunderbird staff responsible for backend code stability, mail compose window, language/dictionaries/spelling, M-C core editor issues, reviewer in /mailnews and /mail
Tooru Fujisawa ({{mozillians|arai}}) <arai_a@mac.com>
: Arai is primarily involved with Mozilla's SpiderMonkey Javascript engine, but within Thunderbird he has actively helped migrate the JavaScript code to keep up with core changes.
Richard Marti ({{mozillians|Paenglab}}) <richard.marti@gmail.com>
: Primary maintainer of Thunderbird themes, also provides code patches to keep Thunderbird current.
Sebastian Hengst ({{mozillians|Archaeopteryx}}) <aryx@gmx.de>
: Contributes widely throughout Mozilla, in Thunderbird actively improves code quality, including resolving conflict issues with Mozilla core code.
Alta88 <alta88@gmail.com>
: Primary maintainer and peer of RSS Feeds, active in other areas including views.
Aceman ({{mozillians|aceman}}) <acelists@atlas.sk>