Companies using Outlook.com by Microsoft Corporation in 2025
As of 2025, 74,832 verified companies use Outlook.com – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.
What is Outlook.com by Microsoft Corporation?
Outlook.com by Microsoft is a web-based suite of webmail, calendaring, contacts, and tasks services. It is designed for personal and business use, providing tools for email management, scheduling, and communication. It’s widely used across various industries and departments, including marketing, sales, and customer support for managing communications and organizing daily tasks.
Last updated date
Number of Companies using
74,832
The majority are based in the
United States
Most common industry?
Manufacturing
Outlook.com’s sample user list in 2025
We have data on 74,832 companies that use Outlook.com. Our Outlook.com customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.
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Outlook.com users and customers by country
2.6K Companies
2.6K Companies
2.6K Companies
2.6K Companies
Where Outlook.com Shows Up Most
Outlook.com is used across a wide range of sectors:
Manufacturing
Business Services
Finance
Retail
Insurance
From lean startups to global enterprises, Outlook.com’s footprint is wide, and that means opportunity.

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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is Outlook.com?
Outlook.com is a web-based suite of webmail, calendaring, contacts, and tasks services provided by Microsoft. It’s designed for both personal and business use, offering tools for email management, scheduling, and communication.
How many companies are using Outlook.com in 2025?
As of 2025, our data shows that 74,832 companies are using Outlook.com.
What types of companies use Outlook.com?
Outlook.com is used across a wide range of industries, company sizes, and geographies. Our data includes company specifics such as industry classification, organizational size, geographical location, funding rounds, and revenue figures.
Which country uses Outlook.com the most?
According to our data, the United States has the highest number of companies using Outlook.com.
Which industry uses Outlook.com the most?
The Manufacturing industry has the highest number of companies using Outlook.com.