List of ProtonMail Customers
Proton
Route de la Galaise 32, Plan-les-Ouates,
Geneva, 1228,
Switzerland
Geneva, 1228,
Switzerland
n/a
Professional Services
400
$70M
Since 2010, our global team of researchers has been studying ProtonMail customers around the world, aggregating massive amounts of data points that form the basis of our forecast assumptions and perhaps the rise and fall of certain vendors and their products on a quarterly basis.
Each quarter our research team identifies companies that have purchased ProtonMail for Transactional Email from public (Press Releases, Customer References, Testimonials, Case Studies and Success Stories) and proprietary sources, including the customer size, industry, location, implementation status, partner involvement, LOB Key Stakeholders and related IT decision-makers contact details.
Companies using ProtonMail for Transactional Email include: Campbell's Company, a United States based Consumer Packaged Goods organisation with 13700 employees and revenues of $10.25 billion, Lkw Walter Austria, a Austria based Transportation organisation with 1650 employees and revenues of $3.25 billion, Engie Ineo France, a France based Construction and Real Estate organisation with 15500 employees and revenues of $3.15 billion, B3, a Brazil based Banking and Financial Services organisation with 2135 employees and revenues of $1.70 billion, Rapyd, a United Kingdom based Banking and Financial Services organisation with 1600 employees and revenues of $1.00 billion and many others.
Contact us if you need a completed and verified list of companies using ProtonMail, including the breakdown by industry (21 Verticals), Geography (Region, Country, State, City), Company Size (Revenue, Employees, Asset) and related IT Decision Makers, Key Stakeholders, business and technology executives responsible for the software purchases.
The ProtonMail customer wins are being incorporated in our Enterprise Applications Buyer Insight and Technographics Customer Database which has over 100 data fields that detail company usage of software systems and their digital transformation initiatives. Apps Run The World wants to become your No. 1 technographic data source!
Apply Filters For Customers
| Logo | Customer | Industry | Empl. | Revenue | Country | Vendor | Application | Category | When | SI | Insight |
|---|---|---|---|---|---|---|---|---|---|---|---|
 |
108 Capital Pte | Banking and Financial Services | 10 | $2M | Singapore | ProtonMail | ProtonMail | Transactional Email | 2022 | n/a |
In 2022, 108 Capital Pte implemented ProtonMail for Transactional Email on its corporate website. ProtonMail is provisioned as the hosted email service for web-based contact forms and client-facing notifications, providing secure message delivery and mailbox management for the firm. Deployment is managed as a SaaS hosted mailbox configuration bound to the corporate domain, with routing and mailbox provisioning configured at the application layer.
Functional modules in use align to Transactional Email workflows, including template-driven notifications, inbound contact routing, mailbox provisioning, and encrypted message handling consistent with ProtonMail capabilities. Operational scope covers customer-facing communications and internal correspondence for the Singapore based firm, with governance focused on mailbox ownership, template control, and email workflow handling to meet banking and financial services operational practices. Configuration and administration are scoped to an approximately 10 person team and executed through the ProtonMail administrative console integrated into the website contact and notification flows.
|
 |
1msg.io | Professional Services | 10 | $2M | Singapore | ProtonMail | ProtonMail | Transactional Email | 2022 | n/a |
In 2022, 1msg.io implemented ProtonMail for Transactional Email on its website. The deployment uses ProtonMail as the cloud hosted mail platform to handle website contact forms, automated notifications, and customer facing message delivery, with ProtonMail configured to support authenticated outbound sending and secure inbox handling for site initiated communications.
Configuration and operations are concentrated on website messaging and customer communications for the Singapore based professional services firm, aligning email routing, message templates, and mailbox workflows with the small company operational model. Integrations are limited to the website contact and notification flows, using ProtonMail to receive inbound messages and deliver transactional emails to customers and prospects, while governance emphasizes mailbox access control and template management to maintain consistent customer messaging.
|
 |
24Unet | Professional Services | 10 | $2M | United States | ProtonMail | ProtonMail | Transactional Email | 2018 | n/a |
In 2018, 24Unet deployed ProtonMail as its Transactional Email solution on its website. The implementation is focused on website-driven messaging for a small United States based professional services firm with about 10 employees, centralizing outbound transactional communications generated by site forms and account interactions.
ProtonMail has been configured to handle core transactional email functions, including sending authenticated messages, mailbox management for inbound contact routing, and template-driven notifications consistent with common Transactional Email workflows. The deployment of ProtonMail is described as part of the web infrastructure, with configuration maintained in the website backend and administration of mailboxes and credentials handled by internal staff.
Operational responsibility for ProtonMail is scoped to customer communications and support workflows, aligning the Company Application Category Business Function relationship as 24Unet ProtonMail Transactional Email customer messaging. Governance appears to be lightweight, focused on mailbox administration, credential control, and ongoing configuration within the site environment without additional system integrator involvement.
|
|
|
2WS | Professional Services | 10 | $1M | United States | ProtonMail | ProtonMail | Transactional Email | 2021 | n/a |
In 2021, 2WS implemented ProtonMail as their Transactional Email provider. ProtonMail is used on their website to capture and deliver contact form submissions, customer inquiries, and site-triggered notifications to corporate mailboxes. The deployment emphasizes secure mailbox provisioning and web-based routing of transactional messages for client-facing communication.
Architecture is lightweight and centered on the website integration, with form endpoints and site notification logic configured to direct messages to ProtonMail inboxes assigned to sales and support teams. Functional capabilities deployed include receipt and routing of transactional messages, inbox and account management, and encrypted message storage consistent with ProtonMail functionality. Operational coverage is company-wide within 2WS and impacts sales, client services, and administrative workflows. Governance is handled at the account level by internal administrators who control mailbox access and routing rules.
|
 |
3-D Printing Marketplace Pte | Professional Services | 10 | $2M | Singapore | ProtonMail | ProtonMail | Transactional Email | 2019 | n/a |
In 2019, 3-D Printing Marketplace Pte deployed ProtonMail as its Transactional Email solution for website-driven customer communications. ProtonMail is used on the company's public website to receive and send transactional messages such as contact form notifications, account and order related confirmations, and customer support correspondence. The implementation leverages ProtonMail's hosted secure email and webmail capabilities to centralize inbound and outbound transactional traffic for a small operations team. ProtonMail is the application referenced for email routing and inbox management.
Deployment architecture is cloud based with ProtonMail accounts bound to the corporate domain and integrated into the website's form submission endpoints to ensure direct delivery to company mailboxes. Operational scope covers customer-facing functions including support and order communication, with staff accessing ProtonMail for message triage and response. Governance is implemented at the account level with standard access controls and email handling workflows suited to a 10 person professional services firm.
|
 |
|
Banking and Financial Services | 23 | $2M | United States | ProtonMail | ProtonMail | Transactional Email | 2023 | n/a |
|
|
|
|
Professional Services | 10 | $1M | United States | ProtonMail | ProtonMail | Transactional Email | 2022 | n/a |
|
|
|
|
Professional Services | 10 | $2M | United States | ProtonMail | ProtonMail | Transactional Email | 2021 | n/a |
|
|
|
|
Retail | 10 | $1M | Philippines | ProtonMail | ProtonMail | Transactional Email | 2022 | n/a |
|
|
|
|
Automotive | 10 | $1M | United States | ProtonMail | ProtonMail | Transactional Email | 2022 | n/a |
|
Showing 1 to 10 of 1182 entries
Buyer Intent: Companies Evaluating ProtonMail
ARTW Buyer Intent uncovers actionable customer signals, identifying software buyers actively evaluating ProtonMail. Gain ongoing access to real-time prospects and uncover hidden opportunities. Companies Actively Evaluating ProtonMail for Transactional Email include:
- Estabanell Y Pahisa Energia, a Spain based Utilities organization with 93 Employees
- Malden Catholic High School, a United States based Education company with 87 Employees
- Mohamed Boudiaf University of M'Sila, a Algeria based Education organization with 725 Employees
Discover Software Buyers actively Evaluating Enterprise Applications
| Logo | Company | Industry | Employees | Revenue | Country | Evaluated |
|---|---|---|---|---|---|---|
 |
Estabanell Y Pahisa Energia | Utilities | 93 | $10M | Spain | 2026-03-21 |
 |
Malden Catholic High School | Education | 87 | $10M | United States | 2026-03-03 |
|
Mohamed Boudiaf University of M'Sila | Education | 725 | $109M | Algeria | 2026-03-03 |
|
|
Government | 400 | $52M | Ireland | 2026-02-18 |
|
|
Non Profit | 1241 | $212M | Belgium | 2026-02-12 |
|
|
Professional Services | 20 | $1M | Nigeria | 2026-02-07 |
|
|
Professional Services | 1650 | $350M | United States | 2026-01-29 |
|
|
Leisure and Hospitality | 418000 | $25.1B | United States | 2026-01-26 |
|
|
Retail | 10 | $1M | Lithuania | 2025-12-22 |
|
|
Media | 11 | $1M | United Kingdom | 2025-11-18 |
FAQ - APPS RUN THE WORLD ProtonMail Coverage
ProtonMail is a Transactional Email solution from ProtonMail.
Companies worldwide use ProtonMail, from small firms to large enterprises across 21+ industries.
Organizations such as Campbell's Company, Lkw Walter Austria, Engie Ineo France, B3 and Rapyd are recorded users of
ProtonMail for Transactional Email.
Companies using ProtonMail are most concentrated in Consumer Packaged Goods, Transportation and Construction and Real Estate, with adoption spanning over 21 industries.
Companies using ProtonMail are most concentrated in United States, Austria and France, with adoption tracked across 195 countries worldwide. This global distribution highlights the popularity of ProtonMail across Americas, EMEA, and APAC.
Companies using ProtonMail range from small businesses with 0-100 employees - 94.25%, to mid-sized firms with 101-1,000 employees - 4.99%, large organizations with 1,001-10,000 employees - 0.59%, and global enterprises with 10,000+ employees - 0.17%.
Customers of ProtonMail include firms across all revenue levels — from $0-100M, to $101M-$1B, $1B-$10B, and $10B+ global corporations.
Contact APPS RUN THE WORLD to access the full verified ProtonMail customer database with detailed Firmographics such as industry, geography, revenue, and employee breakdowns as well as key decision makers in charge of Transactional Email.