Mozilla Messaging

Mozilla Messaging (abbreviated MoMo[1]) was a wholly owned, for-profit subsidiary of the non-profit Mozilla Foundation.[2] It was broadly tasked with aspects of the Mozilla Project that focused on interpersonal communications, such as instant messaging and e-mail. Its main focus was developing Mozilla Thunderbird, the e-mail client developed by the Mozilla Foundation.

Mozilla Messaging
Founded2007; 14 years ago (2007)
DefunctApril 4, 2011 (2011-04-04)
FateAbsorbed by Mozilla Corporation
Vancouver, British Columbia
Key people
David Ascher (CEO)
ProductsMozilla Thunderbird
Number of employees
Approximately 10
ParentMozilla Foundation

It was spun off from the Mozilla project in 2007; on 4 April 2011, it was merged into the Mozilla Labs group of the Mozilla Corporation.[3]


  1. ^ jenzed and Breaking_Pitt. "Thunderbird FAQ, Who makes Thunderbird". Mozilla Messaging. Archived from the original on 2010-08-22. Retrieved 2010-04-07. Thunderbird is developed, tested, translated and supported by the folks at Mozilla Messaging and by a group of dedicated volunteers. Mozilla Messaging ("MoMo" for short) is a sister project to the for-profit Mozilla Corporation, the folks who make the Firefox browser. Both are wholly owned subsidiaries of the non-profit Mozilla Foundation.
  2. ^ Tom Espiner (2008-02-20). "Mozilla ready to add IM to Thunderbird stable?". Retrieved 2008-05-12.[permanent dead link]
  3. ^ Paul, Ryan (5 April 2011). "Thunderbird returns to nest as Mozilla Messaging rejoins Mozilla". Ars Technica. Retrieved 2011-04-05.