Why Thunderbird?

Thunderbird is one of the world’s most trusted open-source email applications, empowering more than 20 million people globally. At MZLA, the team behind Thunderbird, we build privacy-respecting communication tools that help people manage their digital lives while staying in control of their data.

We are open source by design. Our products are developed transparently and in collaboration with a global community of contributors, and that same spirit shapes how we work: collaboratively, inclusively, and with a shared commitment to putting users first.

Our small but growing distributed team includes 65+ people across seven countries. As Thunderbird evolves beyond a single desktop application, we are expanding across desktop, mobile, and paid services to build independent, privacy-respecting alternatives to big tech ecosystems.

Our revenue model combines user donations, which help keep Thunderbird’s apps freely available, with paid services that cover the costs of hosted offerings while supporting long-term sustainability and continued innovation.

A note about MZLA and Mozilla: MZLA Technologies Corporation is the nonprofit-owned company behind Thunderbird and part of the Mozilla family. MZLA is separate from Mozilla Corporation and has its own compensation programs, benefits, and employment policies.

To learn more, visit www.thunderbird.net

The opportunity

The Marketing Specialist at MZLA executes digital marketing activities that support Thunderbird's brand awareness, user growth, and product adoption goals. Working closely with the Marketing Manager, you'll implement marketing campaigns and communications across social media, blog content, email marketing, and other digital channels.

This is a hands-on role for someone who takes satisfaction in producing and publishing high-quality content, coordinating campaign activities, monitoring engagement metrics, and ensuring consistent messaging across platforms. You're a strong communicator and digital marketer who loves content creation, campaign execution, and audience engagement. You enjoy bringing marketing strategies to life through thoughtful execution, strong writing, attention to detail, and effective cross-functional collaboration.

What you’ll do

Execute day-to-day social media activities, including content scheduling, publishing, monitoring, engagement, and reporting.
Draft and publish blog posts, marketing emails, newsletters, and other digital content aligned with brand voice and campaign objectives.
Support integrated marketing campaigns, product launches, and promotional activities across multiple channels.
Monitor social media engagement, coordinating with internal teams when additional context or support is needed.
Maintain editorial and campaign calendars to ensure timely delivery of marketing activities.
Track and report on performance metrics, identifying trends and optimization opportunities.
Support email marketing and automation activities, including list management, campaign setup, and workflow maintenance.
Assist with customer surveys and feedback collection to inform marketing and product insights.
Coordinate with internal teams and external vendors to support campaign execution and content development.
Ensure marketing materials align with brand standards and messaging guidelines.
Support ad hoc marketing and communications projects as needed.

What you bring

3+ years of experience in marketing, communications, digital content, or a related role.
Demonstrated experience executing social media, email, and digital marketing activities across multiple channels.
Strong writing, copyediting, and proofreading skills with the ability to adapt messaging for different audiences and platforms.
Experience with social media management tools, email marketing platforms, content management systems, and digital marketing technologies.
Strong organizational skills and attention to detail, with the ability to manage multiple priorities and deadlines.
Ability to collaborate effectively across cross-functional teams in a distributed, asynchronous environment.
Proactive mindset with the ability to take ownership of work and follow projects through to completion.
Familiarity with marketing analytics and reporting tools.
Excellent verbal and written communication skills.
Ability to learn and responsibly use emerging technologies, including AI-enabled tools, to improve workflows.
Ability to support a global organization with understanding of different cultural dynamics and practices.

Bonus points for

Experience supporting marketi

Marketing Specialist at Mozilla