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About us

Our Mission, Team & Advisors

Learn more about who we are

Contact us

E: info@paubox.com
P: 415-795-7396

5 Third Street
San Francisco, CA 94103

Tech Support
E: support@paubox.com
P: 415-795-7396

Our Mission

Email encryption is broken, with too many steps required for users to send and view emails. The result is a vulnerable system open to cyberattacks that costs individuals and companies billions of dollars each year.

We want to secure every email by increasing the adoption of encryption. We do this by putting the user experience first, but not at the expense of security. We want to start with the healthcare industry, which is under attack by hackers who value the personal health information of patients.


Hoala Greevy Founder, CEO
Founder, CEO
Hoala Greevy

Hoala has 17 years experience in the email industry and is architect of the Paubox platform. He graduated from Portland State University with a BS in Geography and a BS in Social Sciences. He likes to go kayak fishing when possible.

Rick Kuwahara CMO
Rick Kuwahara

Rick has over 11 years of sales and marketing management experience. He is an expert at building data-driven, integrated marketing campaigns that drive growth. He graduated from the University of Hawaii at Manoa with a BA in English and a MBA.

Greg Hoffman Head of Sales
Head of Sales
Greg Hoffman

Greg received his Bachelors degree in Economics from the University of Hawaii at Manoa in 2015. While enrolled, he served two terms as chapter president of Tau Kappa Epsilon, the largest fraternity in America.

Under his leadership, they were awarded the nation’s most improved chapter. Greg’s hobbies include photography, golfing, snowboarding, hiking and traveling.

Shannon Honda Senior Account Executive
Senior Account Executive
Shannon Honda

Shannon was born and raised in Mililani, Hawaii, where he attended the University of Hawaii, majoring in Travel Industry Management. Since moving away from the Islands, he has made a career in the Business Development arena for nearly 20 years.

When he is not working, Shannon is busy with his non-profit work serving as the Vice President/Board Member of the Hawaii Chamber of Commerce of Northern California and on the Executive Committee for the City of Hayward’s Sister City Program (Funabashi, Japan).

Evan Fitzgerald Channel & Distribution Manager
Channel & Distribution Manager
Evan Fitzgerald

Evan graduated from California Polytechnic State University with a bachelor's degree in Economics. After college he moved to the bay area and began working as an EPM consultant implementing budgeting and planning systems. He worked on several end-to-end implementations involving reporting and analytics, driver based budgeting, people planning and subscription based models. In his free time he enjoys playing basketball, golfing and traveling.

Jonathan Greeley Director of Engineering
Director of Engineering
Jonathan Greeley

Jonathan is a transplant from the rainforest of Washington State and graduated from the Evergreen State College with a B.A.Sc. in chemistry and biosystems.

When he's not coding, Jonathan spends his free time hiking and making music.

Robert Ogus Technical Support Engineer
Technical Support Engineer
Robert Ogus

Robert graduated from the University of California, Santa Barbara with a BS degree in Biopsychology. After college he lived in New York and Philadelphia before moving to the bay area in 2014. His previous experience includes roles as a Help Desk Technician, Web Operations Analyst and Data Manager. He likes to help empower people through the use of technology.

When Robert is not working, he enjoys playing the guitar, meditating, eating good food and spending time outdoors.

Lisa Mai Technical Support Representative
Technical Support Representative
Lisa Mai

Lisa graduated from California State East Bay with a BA in Liberal Arts and minor in childhood development. Prior to joining Paubox, Lisa held roles in childhood development, education, and customer success.

When Lisa isn’t working, you can find her baking, hunting for the world’s best chocolate, and traveling to new cities.

Pete Kirsheman Director of Customer Success
Director of Customer Success
Pete Kirsheman

Pete has been running Customer Success and Support for growing tech companies since 2005, and is passionate about delivering an exceptional customer experience. After graduating from the University of Michigan, he worked for startups in Boston and New York before moving to San Francisco.

Pete spends his free time planting trees in SF and hiking in our National Parks.


Blaine Kaho'onei
Blaine Kaho'onei

Blaine Kaho'onei is a techie, an entrepreneur, an investor, philanthropist and kanaka maoli. He is an 18 year veteran in the software industry. Leaving Hawai'i in 1999 for opportunity in San Francisco, he's played roles in Customer Support, Sales, Operations, and Channels for start-ups before building his career at a pre-IPO Salesforce in 2004.

Yuka Nagashima
Yuka Nagashima

Originally from Japan, Yuka co-founded 2 tech start-ups in Hawaii. She then directed the State of Hawaii government’s innovation policies as the executive director and CEO of the High Technology Development Corporation, where she implemented innovation initiatives, drafted legislation to enrich Hawaii’s entrepreneurial ecosystem, led their incubation centers and mentoring programs, and advised executive teams of both startups and established companies globally.

Now residing in Silicon Valley, she has acted as an interim executive for startups and advises founders through her consulting firm, Paideia Enterprises. She is currently the President of Astia, a nonprofit that levels the playing field for women entrepreneurs by providing access to capital and networks for the companies they lead. She holds a Bachelor’s Degree in Physics from Reed College.

Denis R. Coleman
Denis R. Coleman

An educator and entrepreneur. He offers guidance to student entrepreneurs around the country, delivering his presentation “Lessons from 15 Silicon Valley Startups – 1979 to 2015” and holding subsequent one-on-one meetings with students.

Coleman has been operating or board level founder of 15 companies, four of which have had IPOs (Symantec, Visoneer, Neoforma, and Financial Engines). He has angel invested in 55 startups – life science, healthcare, and IT. He has earned three engineering degrees from MIT and a Ph.D. in management from Stanford University.

Dean Levitt
Dean Levitt

Raised on a farm in Knoppieslaagte, South Africa, Dean moved to the United States to be a pursue a career in music eventually finding his way to the tech world. Dean is currently the Chief of Culture of Mad Mimi Email Marketing and a Director of Online Support at GoDaddy.

Eric Nakagawa
Eric Nakagawa

A serial entrepreneur based in San Francisco. He has wide expertise in consumer mobile applications, travel, humor, and user communities. He currently helps mobile developers build better apps at Facebook.