Companies using Proofpoint Sentrion (formerly Sendmail Sentrion) by Proofpoint, Inc. in 2025
As of 2025, 360 verified companies use Proofpoint Sentrion (formerly Sendmail Sentrion) – 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 Proofpoint Sentrion (formerly Sendmail Sentrion) by Proofpoint, Inc.?
Proofpoint Sentrion (formerly Sendmail Sentrion) by Proofpoint, is a secure email gateway solution designed to protect organizations from inbound and outbound email threats. It filters spam, viruses, phishing attacks, and other malicious content to safeguard sensitive information and ensure business continuity. It is commonly used by IT security teams and compliance departments across various industries to maintain email security and adhere to regulatory requirements.
Last updated date
August 17, 2025
Number of Companies using
360
The majority are based in the
United States
Most common industry?
Education
Proofpoint Sentrion (formerly Sendmail Sentrion)’s sample user list in 2025
Company Name
Country
Industry
Employees
Revenue
Product
Amazon
United States
United States
Apparel & Accessories Retail
1556000
$650.3B
Proofpoint Sentrion (formerly Sendmail Sentrion)
Walmart
United States
United States
Department Stores, Shopping Centers & Superstores
2098500
$681B
Proofpoint Sentrion (formerly Sendmail Sentrion)
Apple
United States
United States
Computer Equipment & Peripherals
164000
$400.4B
Proofpoint Sentrion (formerly Sendmail Sentrion)
McKesson
United States
United States
Drug Stores & Pharmacies
43000
$359.1B
Proofpoint Sentrion (formerly Sendmail Sentrion)
IBM
United States
United States
Custom Software & IT Services
270300
$62.8B
Proofpoint Sentrion (formerly Sendmail Sentrion)
UnitedHealth Group
United States
United States
Insurance
400000
$410.1B
Proofpoint Sentrion (formerly Sendmail Sentrion)
Cigna
United States
United States
Insurance
73500
$247.1B
Proofpoint Sentrion (formerly Sendmail Sentrion)
UPS
United States
United States
Freight & Logistics Services
490000
$90.9B
Proofpoint Sentrion (formerly Sendmail Sentrion)
Verizon
United States
United States
Telephony & Wireless
99400
$135.3B
Proofpoint Sentrion (formerly Sendmail Sentrion)
We have data on 360 companies that use Proofpoint Sentrion (formerly Sendmail Sentrion). Our Proofpoint Sentrion (formerly Sendmail Sentrion) 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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Proofpoint Sentrion (formerly Sendmail Sentrion) users and customers by country
United States
United Kingdom
2.6K Companies
Canada
2.6K Companies
Germany
2.6K Companies
Japan
2.6K Companies
Where Proofpoint Sentrion (formerly Sendmail Sentrion) Shows Up Most
Proofpoint Sentrion (formerly Sendmail Sentrion) is used across a wide range of sectors:
Education
Colleges & Universities
Manufacturing
Finance
Software
From lean startups to global enterprises, Proofpoint Sentrion (formerly Sendmail Sentrion)’s footprint is wide, and that means opportunity.
Tech Stack Database
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FAQs
Contact UsHow latest this data is?
This data is updated on August 17, 2025
What is Proofpoint Sentrion (formerly Sendmail Sentrion)?
Proofpoint Sentrion (formerly Sendmail Sentrion) is a secure email gateway solution designed to protect organizations from inbound and outbound email threats. It filters spam, viruses, phishing attacks, and other malicious content to safeguard sensitive information and ensure business continuity.
What types of threats does Proofpoint Sentrion protect against?
Proofpoint Sentrion protects against spam, viruses, phishing attacks, and other malicious email content.
Who typically uses Proofpoint Sentrion?
IT security teams and compliance departments across various industries commonly use Proofpoint Sentrion.
What is the primary function of Proofpoint Sentrion?
Its primary function is to maintain email security and adhere to regulatory requirements.
How many companies are using Proofpoint Sentrion in 2025?
As of 2025, 360 verified companies are using Proofpoint Sentrion.