SquirrelMail
SquirrelMail is a standards-based webmail package written in PHP.
Market Share of SquirrelMail
Current Customer(s)
880
Market Share (Est.)
10.50%
Ranking
#4
Top Competitors and Alternatives of SquirrelMail
The top three of SquirrelMail’s competitors in the Email Deliverability category are SocketLabs with 48.53%, MasterBase with 12.26%, Litmus with 11.93% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| SocketLabs | 4065 | 48.53% | SquirrelMail vs SocketLabs |
| MasterBase | 1027 | 12.26% | SquirrelMail vs MasterBase |
| Litmus | 999 | 11.93% | SquirrelMail vs Litmus |
| Pepipost | 371 | 4.43% | SquirrelMail vs Pepipost |
| Email On Acid | 186 | 2.22% | SquirrelMail vs Email On Acid |
| WhatCounts | 178 | 2.12% | SquirrelMail vs WhatCounts |
| PowerMTA | 140 | 1.67% | SquirrelMail vs PowerMTA |
| SparkPost | 116 | 1.38% | SquirrelMail vs SparkPost |
| Postmark | 94 | 1.12% | SquirrelMail vs Postmark |
| SMTP2GO | 87 | 1.04% | SquirrelMail vs SMTP2GO |
| Mailtrap | 38 | 0.45% | SquirrelMail vs Mailtrap |
| 250ok | 36 | 0.43% | SquirrelMail vs 250ok |
| DataValidation | 32 | 0.38% | SquirrelMail vs DataValidation |
| SMTP.com | 21 | 0.25% | SquirrelMail vs SMTP.com |
| BriteVerify | 20 | 0.24% | SquirrelMail vs BriteVerify |
| CritSend | 17 | 0.20% | SquirrelMail vs CritSend |
| eDataSource | 14 | 0.17% | SquirrelMail vs eDataSource |
| EmailSuccess | 12 | 0.14% | SquirrelMail vs EmailSuccess |
| EmailDelivered | 10 | 0.12% | SquirrelMail vs EmailDelivered |
| InboxFirst | 6 | 0.07% | SquirrelMail vs InboxFirst |
Popular Comparisons
Top Competitors and Alternatives of SquirrelMail
The top three of SquirrelMail’s competitors in the Email Deliverability category are SocketLabs with 48.53%, MasterBase with 12.26%, Litmus with 11.93% market share.
SquirrelMail vs SocketLabs
SquirrelMail vs MasterBase
SquirrelMail vs Litmus
SquirrelMail vs Pepipost
SquirrelMail vs Email On Acid
SquirrelMail vs WhatCounts
SquirrelMail vs PowerMTA
SquirrelMail vs SparkPost
Customers of SquirrelMail
Around the world in 2025, over 880 companies have started using SquirrelMail as Email Deliverability tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| University Of Naples Federico II | 10,000+ | Naples | Campania | Italy |     |
| Ananta Companies | 10,000+ | Dhaka | Dhaka | Bangladesh | |
| Deuzem International | 10,000+ | Izmir | Izmir | Turkey | |
| Pracownia Badań Medioznawczych IS UMK | 10,000+ | Torun | Kujawsko-Pomorskie | Poland | |
| Universidade Federal do Rio Grande do Norte | 10,000+ | Natal | Rio Grande do Norte | Brazil | |
| Universidad De Chile | 10,000+ | Santiago | Santiago Metropolitan | Chile | |
| Humboldt-Universität zu Berlin | 5,000 - 9,999 | Berlin | Berlin | Germany | |
| Garis | 5,000 - 9,999 | Metepec | Mexico | Mexico | |
| Indian Institute Of Technology, Kanpur | 5,000 - 9,999 | Kanpur | Uttar Pradesh | India | |
| UNIVERZITET U NISU, ELEKTRONSKI FAKULTET U NISU | 5,000 - 9,999 | Nis | Central Serbia | Serbia | |
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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 Continuing Education (13), Higher Education (12), Student Services (10).
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 (399 companies), 20 - 49 employees (165 companies), 10 - 19 employees (86 companies).
Employee Size
SquirrelMail Customers by Geography
The top three geographies of SquirrelMail for email-deliverability are the United States with 308(57.46%), Canada with 45(8.40%), Germany with 33(6.16%) 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 SocketLabs, MasterBase, Litmus. 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 SocketLabs SquirrelMail vs MasterBase SquirrelMail vs Litmus.
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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