Companies Using Outlook
266,347 companies found · 186,442 with decision maker contacts
Discover 266,347 companies using Outlook in their tech stack. See which businesses rely on Outlook, explore their full technology stack, and connect with decision makers at each company.
NHS England
england.nhs.uk
Outlook
Amazon CloudFront
Gmail
Google Apps
+16 more
King County, WA
kingcounty.gov
Amazon SES
DynECT
Outlook
Blue Host
GLG
glg.it
Rackspace MailGun
Mimecast
Outlook
International Brotherhood of Electrical Workers (IBEW)
ibew.org
County of Riverside
rc-hr.com
Allied Universal
aus.com
Volkswagen AG
volkswagenag.com
NSOne
Microsoft Office 365
+31 more
Volkswagen
volkswagen-newsroom.com
Ontario Government
ontario.ca
Outlook
Google Maps
Google Font API
United States Postal Service
usps.com
Microsoft Office 365
Outlook
Flowplayer Commercial
State of New Jersey
nj.gov
Tata Consultancy Services
tcs.com
Compass Group
compass-group.com
+5 more
DHL
dhl.com
Amazon SES
Quess Corp Limited
quesscorp.com
United States Air Force
airforce.com
Outlook
Microsoft Office 365
Gmail
+40 more
Texas Department of Family and Protective Services
state.tx.us
linkedin.com
Government of Canada
tbs-sct.gc.ca
Outlook
Microsoft Office 365
Government of Nova Scotia
novascotiaimmigration.com
Frequently Asked Questions
How many companies use Outlook?
StackWho currently tracks 266,347 companies that use Outlook in their tech stack. This includes companies of all sizes across multiple industries.
Can I get contact info for Outlook users?
Yes. StackWho Pro subscribers can view and export decision maker contacts -- including names, titles, and verified emails -- for companies using Outlook.
How is the Outlook tech stack data collected?
We use a combination of web scanning, public data analysis, and machine learning to identify technologies used by companies. Our data is refreshed regularly to maintain accuracy.