How many email patterns does JSI use?

JSI uses 8 known email patterns.

What domain does JSI use for work emails?

JSI uses jsi.com for work email addresses.

Most Common Email Formats at JSI

JSI's most common email format is First_Last@jsi.com (ex. John_Doe@jsi.com), used for 67% of jsi.com addresses. JSI uses 8 email patterns across 2 domains: jsi.com and jsi.org. Percentages are the share of addresses within each domain.

@jsi.com

4 patterns

Format	Example	Share of jsi.com
First_Last@jsi.comMost common	John_Doe@jsi.com	67%
FLast@jsi.com	JDoe@jsi.com	31%
First@jsi.com	John@jsi.com	1%
Last_First@jsi.com	Doe_John@jsi.com	1%

@jsi.org

4 patterns

Format	Example	Share of jsi.org
FLast@jsi.orgMost common	JDoe@jsi.org	55%
First.Last@jsi.org	John.Doe@jsi.org	35%
FirstLast@jsi.org	JohnDoe@jsi.org	5%
First.MiddleLast@jsi.org	John.MichaelDoe@jsi.org	5%

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Frequently Asked Questions

What does JSI do?

JSI was founded in 1978 and operates in the Non-profit Organizations industry, alongside similar companies like Knoll, IKEA and National Office Furniture. You can visit jsi.org or contact JSI's headquarters by phone at

+1-617-482-****

. Explore JSI's company overview page for more information.

What is JSI's email address format?

JSI's email format typically follows the pattern of First_Last@jsi.com; this email format is used 67% of the time. Other contacts within LeadIQ's database had email formats such as FLast@jsi.com and First@jsi.com. Looking for more contact data? Unlock accurate emails and phone numbers from millions of profiles verified in real-time.

How many employees does JSI have currently?

JSI has approximately 3.3K employees as of October 2026. Key team members to contact include Chief Executive Officer: R. K., Chief Information & Technology Officer: B. P. and Chief Financial Officer: G. M. For more team information and contact data, explore JSI's employee directory with LeadIQ.

JSI Email Format

Q: What is JSI's email address format?

JSI's email format typically follows the pattern of ${fn}_${ln}. Other email formats include ${fi}${ln} and ${fn}.

Non-profit OrganizationsMassachusetts, United States1001-5000 Employees

John Snow, Inc. (JSI) is a nonprofit organization based in Boston, Massachusetts, focused on improving health and education outcomes for individuals and communities. The organization seeks to support a workforce of people who are passionate about advancing this cause, providing an environment where their efforts can be pursued. In the nonprofit sector, JSI conducts public health and health-systems work aimed at strengthening the delivery of health services and related outcomes.

In March 2026, Monica Valdes Lupi—Managing Director at The Kresge Foundation and a FutureGood Studio alumna—was appointed to the board of directors of JSI's Research & Training Institute, Inc.

Most common format

First_Last@jsi.com

Example: John_Doe@jsi.com

8 patterns across 2 domains. See all formats

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Most Common Email Formats at JSI

@jsi.com

@jsi.org

Need a specific person's email?

Frequently Asked Questions

What does JSI do?

What is JSI's email address format?

How many employees does JSI have currently?

JSI Email Format

Ready to create more pipeline?

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What you can expect from LeadIQ:

Ready to create more pipeline?

Everything for prospecting,
in one platform.