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Companies using LeadMailbox

As of 14 October 2026, Firmable tracks 9 companies across 8 countries running LeadMailbox. See who they are, and who to call.

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Companies using LeadMailbox

Showing 2 of 9 companies

Five9

five9.com · Computer software · 1,001–5,000 employees

Last seen 16 Aug 2026 The most recent date Firmable detected LeadMailbox at this company.

Decision makers · 1K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Account Director MobileEmail
Enterprise Account Director MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

New Senior Vice President Business Development joined · 30 Sep 2026

NovelVox NA partners with Five9 through a formal reseller relationship in Georgia on Oct 7th '26 · 7 Oct 2026

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Groza Learning Center

grozalearningcenter.com · Primary and secondary education · 11–50 employees

Last seen 5 Aug 2026 The most recent date Firmable detected LeadMailbox at this company.

Decision makers · 1 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Director Of Learning Email

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Signals Recent events at this company, such as a leadership change, funding or a new office.

No signals recorded

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Who uses LeadMailbox

A breakdown of the 9 companies running LeadMailbox.

Top industries

Financial services4
Information technology and services2
Education and training1
Professional and business services1

No industry recorded: 1

Company size

11–502 (33%)
251–5002 (33%)
501–1,0001 (17%)
1,001–5,0001 (17%)

Share of companies with a recorded size, by employees.

No size recorded: 3

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Frequently asked questions

About the LeadMailbox data on this page.

How many companies use LeadMailbox?

Firmable holds confirmed LeadMailbox detections for 9 distinct companies, 5 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.

Which companies use LeadMailbox?

Five9 and Groza Learning Center are among the most prominent in the current set.

What industries use LeadMailbox?

Financial services, information technology and services and education and training lead the set, across 5 industries in total.

What size companies use LeadMailbox?

Adoption concentrates in the 11-50 employee band, across the companies whose size is recorded.

Where are LeadMailbox users based?

The United States, Canada, the Philippines and Australia account for most detections, across 8 countries.

How current is this data?

5 companies were confirmed in the last 90 days. Last detection 3 September 2026.

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