Postbox offers a desktop email software that allows users to streamline and manage their email activities on a single interface.
Current Customer(s)
Market Share (Est.)
Ranking
The top three of Postbox’s competitors in the Email Client category are Microsoft Outlook with 88.80%, Amazon WorkMail with 8.56%, Zimbra with 1.17% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| Microsoft Outlook | 287574 | 88.80% | Postbox vs Microsoft Outlook |
| Amazon WorkMail | 27737 | 8.56% | Postbox vs Amazon WorkMail |
| Zimbra | 3781 | 1.17% | Postbox vs Zimbra |
| Yahoo Business Mail | 1841 | 0.57% | Postbox vs Yahoo Business Mail |
| Salesforce Inbox | 1255 | 0.39% | Postbox vs Salesforce Inbox |
| HCL Notes | 282 | 0.09% | Postbox vs HCL Notes |
| Logix Cloud Email | 278 | 0.09% | Postbox vs Logix Cloud Email |
| Apple Mail | 271 | 0.08% | Postbox vs Apple Mail |
| Roundcube | 243 | 0.08% | Postbox vs Roundcube |
| MDaemon Email Server | 109 | 0.03% | Postbox vs MDaemon Email Server |
| Gaggle Mail | 91 | 0.03% | Postbox vs Gaggle Mail |
| eM Client | 81 | 0.03% | Postbox vs eM Client |
| Afterlogic Webmail | 52 | 0.02% | Postbox vs Afterlogic Webmail |
| Rambox | 48 | 0.01% | Postbox vs Rambox |
| Hiri | 40 | 0.01% | Postbox vs Hiri |
| PreVeil | 33 | 0.01% | Postbox vs PreVeil |
| SmarterMail | 23 | 0.01% | Postbox vs SmarterMail |
| HCL Verse | 20 | 0.01% | Postbox vs HCL Verse |
| Canary Mail | 13 | 0.00% | Postbox vs Canary Mail |
| Thunderbird | 13 | 0.00% | Postbox vs Thunderbird |
Popular Comparisons
The top three of Postbox’s competitors in the Email Client category are Microsoft Outlook with 88.80%, Amazon WorkMail with 8.56%, Zimbra with 1.17% market share.
Postbox vs Microsoft Outlook
Postbox vs Amazon WorkMail
Postbox vs Zimbra
Postbox vs Yahoo Business Mail
Postbox vs Salesforce Inbox
Postbox vs HCL Notes
Postbox vs Logix Cloud Email
Postbox vs Apple Mail
Around the world in 2026, over 1 companies have started using Postbox as Email Client tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Relationships Scotland Tayside & Fife | 20 - 49 | Dundee | Scotland | United Kingdom |
The majority of Postbox's customers for the email-client category fall in the company size of 20 - 49 employees (1 companies).
Employee Size
The top three geographies of Postbox for email-client are the United Kingdom with 1(100.00%) customers respectively.
Customers
Find answers to the most often asked questions by users.
Who are the top Postbox competitors?
Postbox’s Top competitors in the email-client category are Microsoft Outlook, Amazon WorkMail, Zimbra. You can view a full list of Postbox competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Postbox and 40,000 other technologies on the internet. You can also compare Postbox and its feature with top competitors here : Postbox vs Microsoft Outlook Postbox vs Amazon WorkMail Postbox vs Zimbra.
What is Postbox customer distribution based on company size?
What is Postbox market share in the email-client?
What are the top countries that use Postbox?
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