Thunderbird Project | Company Profile, Culture & Jobs

Company overview

Thunderbird is the leading free and open-source email, calendaring, newsfeed, and chat client with more than 20 million active monthly users across Windows, macOS, and Linux. One of Thunderbird's core principles is the use and promotion of open and decentralized standards. Thunderbird is part of MZLA Technologies Corporation, a wholly-owned subsidiary of the Mozilla Foundation.

Founded in 2003

San Francisco, California, USA

31 employees (3 in marketing)

thunderbird.net

Salaries

Typical salary range

CA$95,000 – CA$117,000

/ yr

Median base

$78,500

Median total

$78,500

Median experience

4 years

Submissions

4

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People

Hiring contacts

Margaret Baker, CHRL

Senior Manager, People Operations & Strategy

At the company for 2 years 9 months

Headcount trend

Company growth over the last 12 months

Audience

Monthly website visitors

1.9M

Month over month-8.9%

Quarter over quarter-46.2%

Top sourceDirect (56.9%)

Ad budget per month$11.4

Average search rank54.2

Traffic source mix

Direct

56.9%

Search

37.8%

News

Thunderbird Pro: This is the (non-final) early bird price of the new email service

Nov 21, 2025 • gHacks Technology News

Debt rescue package required for Thunderbird

Nov 19, 2025 • Mining News Net

NSW gold acquisition shows early signs of scale for Thunderbird

Oct 29, 2025 • businessnews.com.au

Links

thunderbird.net

Crunchbase

Thunderbird Project insights

Company and marketing-team signals from saved company data and employee profiles. Use this before you apply, interview, or negotiate.

Founded

2003

Headquarters

San Francisco, California

Employees

11-50

19.2% growth last 12mo

Marketing team

3

10% of company

1 saved employee profiles are linked to this company.

Company stability and risk

Shows a quick risk view from growth, funding age, and news.

Main result

Low risk

Seed-stage · Growing 19.2% last 12 months · More mature

Trend

2021-11-29 -> 2025-11-24

Headcount (12 months)

+19.2%

Last funding round

—

Negative news (120 days)

0

Risk score0/7

Website traffic

Shows traffic size, change, and traffic sources.

Monthly website visitors

1.9M

Month over month-8.9%

Quarter over quarter-46.2%

Top sourceDirect (56.9%)

Traffic source mix

Direct

56.9%

Search

37.8%

Referral

Competitors and search

Shows competitors and key search metrics in one view.

Main result

0 competitor sites

Search traffic: 90.1K organic clicks / 1 paid clicks

Organic competitors

0

Paid competitors

0

Keyword change

+3,300

Ad budget per month

$11.4

Average search rank

54.2

LinkedIn followers

Shows follower count and growth.

LinkedIn followers

Follower count and growth

Total followers

2.5K

12-mo growth

+72.8%

Monthly growth

+5.3%

Marketing team size

Shows saved marketing team size.

3

10% of the company • 1 saved marketing people

First hire or larger team

Shows if this looks like one hire or a bigger team.

Looks like larger team

Based on saved marketing team size: 3.

News

Shows saved company news.

Thunderbird Pro: This is the (non-final) early bird price of the new email service

Nov 21, 2025 • gHacks Technology News

Debt rescue package required for Thunderbird

Nov 19, 2025 • Mining News Net

NSW gold acquisition shows early signs of scale for Thunderbird

Oct 29, 2025 • businessnews.com.au

Loading insights...

Headcount +19.2% year over year

Referral

4.5%

Social

0.5%

Paid referral

0.3%

LinkedIn followers

Follower count and growth

Total followers

2.5K

12-mo growth

+72.8%

Monthly growth

+5.3%

Thunderbird Project insights

Company and marketing-team signals from saved company data and employee profiles. Use this before you apply, interview, or negotiate.

Founded

2003

Headquarters

San Francisco, California

Employees

11-50

19.2% growth last 12mo

Marketing team

3

10% of company

1 saved employee profiles are linked to this company.

Company stability and risk

Shows a quick risk view from growth, funding age, and news.

Main result

Low risk

Seed-stage · Growing 19.2% last 12 months · More mature

Trend

2021-11-29 -> 2025-11-24

Headcount (12 months)

+19.2%

Last funding round

—

Negative news (120 days)

0

Risk score0/7

Website traffic

Shows traffic size, change, and traffic sources.

Monthly website visitors

1.9M

Month over month-8.9%

Quarter over quarter-46.2%

Top sourceDirect (56.9%)

Traffic source mix

Direct

56.9%

Search

37.8%

Referral

Competitors and search

Shows competitors and key search metrics in one view.

Main result

0 competitor sites

Search traffic: 90.1K organic clicks / 1 paid clicks

Organic competitors

0

Paid competitors

0

Keyword change

+3,300

Ad budget per month

$11.4

Average search rank

54.2

LinkedIn followers

Shows follower count and growth.

LinkedIn followers

Follower count and growth

Total followers

2.5K

12-mo growth

+72.8%

Monthly growth

+5.3%

Marketing team size

Shows saved marketing team size.

3

10% of the company • 1 saved marketing people

First hire or larger team

Shows if this looks like one hire or a bigger team.

Looks like larger team

Based on saved marketing team size: 3.

News

Shows saved company news.

Thunderbird Pro: This is the (non-final) early bird price of the new email service

Nov 21, 2025 • gHacks Technology News

Debt rescue package required for Thunderbird

Nov 19, 2025 • Mining News Net

NSW gold acquisition shows early signs of scale for Thunderbird

Oct 29, 2025 • businessnews.com.au

4.5%

Social

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