Alex Kapranoff » from archive
Thunderbird and Gmail | Thunderbird Help -
"Gmail accounts created on or about June 2014 (exact date unknown, Google only mentions "second half of 2014" in their new authentication blog post) won't work with Thunderbird until the Thunderbird team implements Google's non-email-standard authentication. This is currently scheduled for Thunderbird 38 which will be released on May 12, 2015." ‎· Alex Kapranoff