SquirrelMail
SquirrelMail is a standards-based webmail package written in PHP.
Market Share of SquirrelMail
Current Customer(s)
1043
Market Share (Est.)
13.16%
Ranking
#2
Top Competitors and Alternatives of SquirrelMail
The top three of SquirrelMail’s competitors in the Email Deliverability category are Litmus with 34.97%, SocketLabs with 9.59%, Email On Acid with 7.50% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| Litmus | 2771 | 34.97% | SquirrelMail vs Litmus |
| SocketLabs | 760 | 9.59% | SquirrelMail vs SocketLabs |
| Email On Acid | 594 | 7.50% | SquirrelMail vs Email On Acid |
| SparkPost | 412 | 5.20% | SquirrelMail vs SparkPost |
| PowerMTA | 296 | 3.74% | SquirrelMail vs PowerMTA |
| WhatCounts | 252 | 3.18% | SquirrelMail vs WhatCounts |
| DataValidation | 247 | 3.12% | SquirrelMail vs DataValidation |
| MasterBase | 247 | 3.12% | SquirrelMail vs MasterBase |
| Postmark | 230 | 2.90% | SquirrelMail vs Postmark |
| Mailtrap | 180 | 2.27% | SquirrelMail vs Mailtrap |
| Pepipost | 170 | 2.15% | SquirrelMail vs Pepipost |
| SMTP2GO | 147 | 1.85% | SquirrelMail vs SMTP2GO |
| Netcore Email API | 122 | 1.54% | SquirrelMail vs Netcore Email API |
| 250ok | 101 | 1.27% | SquirrelMail vs 250ok |
| SMTP.com | 80 | 1.01% | SquirrelMail vs SMTP.com |
| BriteVerify | 61 | 0.77% | SquirrelMail vs BriteVerify |
| turboSMTP | 60 | 0.76% | SquirrelMail vs turboSMTP |
| eDataSource | 35 | 0.44% | SquirrelMail vs eDataSource |
| EmailDelivered | 19 | 0.24% | SquirrelMail vs EmailDelivered |
| CritSend | 18 | 0.23% | SquirrelMail vs CritSend |
Popular Comparisons
Top Competitors and Alternatives of SquirrelMail
The top three of SquirrelMail’s competitors in the Email Deliverability category are Litmus with 34.97%, SocketLabs with 9.59%, Email On Acid with 7.50% market share.
SquirrelMail vs Litmus
SquirrelMail vs SocketLabs
SquirrelMail vs Email On Acid
SquirrelMail vs SparkPost
SquirrelMail vs PowerMTA
SquirrelMail vs WhatCounts
SquirrelMail vs DataValidation
SquirrelMail vs MasterBase
Customers of SquirrelMail
Around the world in 2026, over 1041 companies have started using SquirrelMail as Email Deliverability tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| University Of South Florida | 10,000+ | Tampa | Florida | United States |     |
| Dell | 10,000+ | Round Rock | Texas | United States | |
| Universidad De Chile | 10,000+ | Santiago | Santiago Metropolitan | Chile | |
| SIS Group Enterprises | 10,000+ | New Delhi | NCT | India | |
| Serco | 10,000+ | Hook | England | United Kingdom | |
| Hacettepe University | 10,000+ | Ankara | Ankara | Turkey | |
| UNIVERSIDADE ESTADUAL PAULISTA JULIO DE MESQUITA FILHO | 10,000+ | Sao Paulo | Sao Paulo | Brazil | |
| DXC Technology | 10,000+ | Ashburn | Virginia | United States | |
| TURKIYE CUMHURIYETI DEVLETI | 10,000+ | Ankara | Ankara | Turkey | |
| PayPal | 10,000+ | San Jose | California | United States | |
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SquirrelMail Customers by Products and Services
The top three products and services offering customers that use SquirrelMail for Email Deliverability are Higher Education (18), Web Hosting (14), Continuing Education (14).
Customers
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SquirrelMail Customers by Employee Size
The majority of SquirrelMail's customers for the email-deliverability category fall in the company size of 0 - 9 employees (444 companies), 20 - 49 employees (166 companies), 10 - 19 employees (101 companies).
Employee Size
SquirrelMail Customers by Geography
The top three geographies of SquirrelMail for email-deliverability are the United States with 356(55.19%), India with 44(6.82%), Canada with 42(6.51%) customers respectively.
Customers
Employees of SquirrelMail
Also see other Products/Services by SquirrelMail in:
FAQ
Find answers to the most often asked questions by users.
Who are the top SquirrelMail competitors?
SquirrelMail’s Top competitors in the email-deliverability category are Litmus, SocketLabs, Email On Acid. You can view a full list of SquirrelMail competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of SquirrelMail and 40,000 other technologies on the internet. You can also compare SquirrelMail and its feature with top competitors here : SquirrelMail vs Litmus SquirrelMail vs SocketLabs SquirrelMail vs Email On Acid.
What is SquirrelMail customer distribution based on company size?
What is SquirrelMail market share in the email-deliverability?
What are the top countries that use SquirrelMail?
What are the top industries that use SquirrelMail?
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