Bart Butler

Bart Butler serves as Chief Technology Officer at ProtonMail. ProtonMail operates in the information technology & services sector with approximately 720.0 employees. The company is headquartered in Geneva, Geneva. To date, ProtonMail has raised 4246925.0 in total funding, with the most recent round being Other.

Industry & Role Insights

• • MessageCEO tracks 50,503 executives in the information technology & services sector.
• • 305 executive contacts are available in Geneva.
• • Our database includes 201,469 c suite-level executives.

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Marvin Jo CTO at 위블링

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Robert Kim CEO, North America at 당근마켓

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Kyung Lim CTO at 인터파크

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Alex Ryu Chief Operating Officer, Supply Chain Solutions Group at 동양시스템즈(주)

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Wonho Kang 라포테이블(팔도감) | CEO · Product Lead at 라포랩스(퀸잇)

How can I contact Bart Butler?

Bart Butler's verified email address is available on MessageCEO. They currently work at ProtonMail. Pro subscribers can access direct email addresses for over 200,000 executives.

What company does Bart Butler lead?

Bart Butler is Chief Technology Officer at ProtonMail, a company in the information technology & services sector with 720.0 employees. The company is based in Geneva, Geneva.

What industry is Bart Butler in?

Bart Butler works in the information technology & services industry as Chief Technology Officer at ProtonMail. MessageCEO provides verified contact information for executives across all major industries.

Is Bart Butler's contact information verified?

Yes. MessageCEO verifies executive contact information through multiple data sources and regular validation checks. Bart Butler's profile is kept up-to-date with the latest available information.

Last updated: April 9, 2026