FastMail
FastMail delivers security, privacy and reliability for your email, calendars and contacts.
Market Share of FastMail
Current Customer(s)
889
Market Share (Est.)
0.12%
Ranking
#12
Top Competitors and Alternatives of FastMail
The top three of FastMail’s competitors in the Hosted Email category are Microsoft Outlook with 41.21%, Microsoft Exchange Online with 30.51%, SiteGround Email Hosting with 23.00% market share.
Popular Comparisons
Top Competitors and Alternatives of FastMail
The top three of FastMail’s competitors in the Hosted Email category are Microsoft Outlook with 41.21%, Microsoft Exchange Online with 30.51%, SiteGround Email Hosting with 23.00% market share.
FastMail vs Microsoft Outlook
FastMail vs Microsoft Exchange Online
FastMail vs SiteGround Email Hosting
FastMail vs Zoho Mail
FastMail vs Rackspace Email
FastMail vs Strato
FastMail vs Postfix
FastMail vs Network Solutions Email
Customers of FastMail
Around the world in 2026, over 875 companies have started using FastMail as Hosted Email tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Zoho | 10,000+ | Chingleput | Tamil Nadu | India |     |
| Upwork | 10,000+ | San Francisco | California | United States | |
| Sopra Steria | 10,000+ | Paris | Ile-de-France | France | |
| Post Office Ltd | 10,000+ | London | England | United Kingdom | |
| SS&C Technologies | 10,000+ | Windsor | Connecticut | United States | |
| Harvard Innovation Labs | 10,000+ | Boston | Massachusetts | United States | |
| Democrats Abroad | 5,000 - 9,999 | Washington, D.C. | Washington, D.C. | United States | |
| Playa Management Usa, LLC | 5,000 - 9,999 | Johannesburg | Gauteng | South Africa | |
| Fastmail | 1,000 - 4,999 | Melbourne | Victoria | Australia | |
| Travelport | 1,000 - 4,999 | Slough | England | United Kingdom | |
Uncover hidden demand and identify accounts ready to buy with 6sense Intent Data.
FastMail Customers by Products and Services
The top three products and services offering customers that use FastMail for Hosted Email are Software Development (24), Web Development (22), Web Design (21).
Customers
Download the 6sense Chrome Extension to get verified contact data of FastMail employees
Install Now
FastMail Customers by Employee Size
The majority of FastMail's customers for the hosted-email category fall in the company size of 0 - 9 employees (551 companies), 20 - 49 employees (216 companies), 100 - 249 employees (48 companies).
Employee Size
FastMail Customers by Geography
The top three geographies of FastMail for hosted-email are the United States with 459(61.28%), United Kingdom with 112(14.95%), Canada with 44(5.87%) customers respectively.
Customers
Employees of FastMail
Also see other Products/Services by FastMail in:
FAQ
Find answers to the most often asked questions by users.
Who are the top FastMail competitors?
FastMail’s Top competitors in the hosted-email category are Microsoft Outlook, Microsoft Exchange Online, SiteGround Email Hosting. You can view a full list of FastMail competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of FastMail and 40,000 other technologies on the internet. You can also compare FastMail and its feature with top competitors here : FastMail vs Microsoft Outlook FastMail vs Microsoft Exchange Online FastMail vs SiteGround Email Hosting.
What is FastMail customer distribution based on company size?
What is FastMail market share in the hosted-email?
What are the top countries that use FastMail?
What are the top industries that use FastMail?
Get everything in one place
Close deals faster by understanding your clients well. Know their technology stack, contract renewal date, top decision-makers, hiring trends, and top company news in one place.
Get a demoInterested in 6sense for your organization?
Book a Demo
