CritSend
CritSend is a SMTP relay for developers.
Market Share of CritSend
Current Customer(s)
17
Market Share (Est.)
0.20%
Ranking
#17
Top Competitors and Alternatives of CritSend
The top three of CritSend’s competitors in the Email Deliverability category are SocketLabs with 46.81%, MasterBase with 12.08%, Litmus with 11.98% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| SocketLabs | 4061 | 46.81% | CritSend vs SocketLabs |
| MasterBase | 1048 | 12.08% | CritSend vs MasterBase |
| Litmus | 1039 | 11.98% | CritSend vs Litmus |
| SquirrelMail | 975 | 11.24% | CritSend vs SquirrelMail |
| Pepipost | 384 | 4.43% | CritSend vs Pepipost |
| Email On Acid | 200 | 2.31% | CritSend vs Email On Acid |
| WhatCounts | 181 | 2.09% | CritSend vs WhatCounts |
| PowerMTA | 151 | 1.74% | CritSend vs PowerMTA |
| SparkPost | 123 | 1.42% | CritSend vs SparkPost |
| Postmark | 99 | 1.14% | CritSend vs Postmark |
| SMTP2GO | 94 | 1.08% | CritSend vs SMTP2GO |
| SMTP.com | 83 | 0.96% | CritSend vs SMTP.com |
| Mailtrap | 48 | 0.55% | CritSend vs Mailtrap |
| 250ok | 38 | 0.44% | CritSend vs 250ok |
| DataValidation | 34 | 0.39% | CritSend vs DataValidation |
| BriteVerify | 20 | 0.23% | CritSend vs BriteVerify |
| eDataSource | 14 | 0.16% | CritSend vs eDataSource |
| EmailSuccess | 12 | 0.14% | CritSend vs EmailSuccess |
| EmailDelivered | 12 | 0.14% | CritSend vs EmailDelivered |
| InboxFirst | 8 | 0.09% | CritSend vs InboxFirst |
Popular Comparisons
Top Competitors and Alternatives of CritSend
The top three of CritSend’s competitors in the Email Deliverability category are SocketLabs with 46.81%, MasterBase with 12.08%, Litmus with 11.98% market share.
CritSend vs SocketLabs
CritSend vs MasterBase
CritSend vs Litmus
CritSend vs SquirrelMail
CritSend vs Pepipost
CritSend vs Email On Acid
CritSend vs WhatCounts
CritSend vs PowerMTA
Customers of CritSend
Around the world in 2025, over 17 companies have started using CritSend as Email Deliverability tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Bside | 20 - 49 | Rome | Latium | Italy |   |
| 1o8 | 10 - 19 | Atlanta | Georgia | United States | |
| Southrn Cargo Packers | 10 - 19 | Hyderabad | Telangana | India | |
| Two Kings Comics | 0 - 9 | Victor | New York | United States | |
| Voice & Piano With Alison Trick | 0 - 9 | Marblehead | Massachusetts | United States | |
| Style Uncovered | 0 - 9 | New Rochelle | New York | United States | |
| Ukraine Global Faculty | 0 - 9 | Kyiv | Kyiv City | Ukraine |  |
| Ruscino Fabrica De Puertas Placas | 0 - 9 | Buenos Aires F.D. | Argentina | | |
| Loo - Design | Groningen | Groningen | Netherlands | | |
| SIC AUDIT | 20 - 49 | Marseille | Provence-Alpes-Cote d'Azur | France | |
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CritSend Customers by Products and Services
The top three products and services offering customers that use CritSend for Email Deliverability are Fashion Blogging (1), Fashion (1), Influencer (1).
Customers
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CritSend Customers by Employee Size
The majority of CritSend's customers for the email-deliverability category fall in the company size of 0 - 9 employees (10 companies), 10 - 19 employees (3 companies), 20 - 49 employees (3 companies).
Employee Size
CritSend Customers by Geography
The top three geographies of CritSend for email-deliverability are the United States with 7(41.18%), India with 2(11.76%), United Kingdom with 2(11.76%) customers respectively.
Customers
Employees of CritSend
Also see other Products/Services by CritSend in:
FAQ
Find answers to the most often asked questions by users.
Who are the top CritSend competitors?
CritSend’s Top competitors in the email-deliverability category are SocketLabs, MasterBase, Litmus. You can view a full list of CritSend competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of CritSend and 40,000 other technologies on the internet. You can also compare CritSend and its feature with top competitors here : CritSend vs SocketLabs CritSend vs MasterBase CritSend vs Litmus.
What is CritSend customer distribution based on company size?
What is CritSend market share in the email-deliverability?
What are the top countries that use CritSend?
What are the top industries that use CritSend?
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