eM Client, Inc.
eM Client, Inc. develops a cross-platform email and productivity client for Windows, macOS, iOS, and Android, combining email, calendar, tasks, contacts, notes, and chat. It serves individual professionals, freelancers, and business customers worldwide, with the Czech-registered entity headquartered in Prague.
- Company typePrivate
- Founded2007
- HeadquartersSan Francisco, United States
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What eM Client, Inc. does
eM Client, Inc. is a privately-held software company — operating through its Czech legal entity eM Client s.r.o. headquartered in Prague (Thámova 18, Prague 8) — that develops a cross-platform email and productivity client available on Windows, macOS, iOS, and Android. The application unifies email, calendar, tasks, contacts, notes, and chat in a single interface and integrates natively with Google Workspace, Office 365, Microsoft Outlook, and Microsoft Exchange, with additional connectors to Slack, Microsoft Teams, Rocket.Chat, and Cisco Webex. Beyond the core client, the product supports PGP/SMIME encryption, an in-house automatic email translation service, offline mode, Gmail-style inbox categories, and (as of Version 10, March 2024) AI features including message summarization, smart replies, and AI-assisted composition powered by Microsoft Azure OpenAI.
The company's revenue model is multi-stream: a free non-commercial tier, paid Personal and Business licenses available via annual subscription or one-time payment, a separately sold AI Add-on with extra AI credits, VIP Support extensions, Lifetime Upgrades, optional Additional Device activations, and a tiered reseller Partner Program (Authorized/Silver/Gold) that distributes credit-based licenses with 30–45% channel margins. Go-to-market is primarily product-led through direct website download, the Apple App Store and Google Play (where the mobile app is currently free), with channel partners extending enterprise reach. The company markets itself globally in English, German, Spanish, Czech, Italian, and French, claims more than 100,000 business customers and 4,000,000 users, lists brand-name references such as Toyota, McDonald's, Raiffeisen, Avis, DPD, and Air Canada, and holds independent security assessments from Leviathan Security Group and TAC Security alongside GDPR and Google API Limited Use compliance. The mobile apps for iOS and Android launched in March 2024 and the firm completed its first disclosed acquisition — macOS desktop client Postbox Inc. — on October 22, 2024. The company was founded in 2007 by three developers, has no external funding rounds in the source material, and is led by co-founder Michal Bürger as CEO; cited co-founders also include Adam Paclt and Filip Navara.
eM Client, Inc. firmographics
Firmographics- Name
- eM Client, Inc.
- Legal name
- eM Client s.r.o.
- Website
- https://emclient.com
- Company type
- Private
- Founded year
- 2007
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- eM Client, Inc. develops a cross-platform email and productivity client for Windows, macOS, iOS, and Android, combining email, calendar, tasks, contacts, notes, and chat. It serves individual professionals, freelancers, and business customers worldwide, with the Czech-registered entity headquartered in Prague.
- Ownership category
- akta.pro rank
eM Client, Inc. industry classification
Industry- Product category
- Email Client Software
- NAICS
- Software Publishers (5132)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Email, Calendar & Scheduling (BPAMAMAC)
Keywords
Where eM Client, Inc. is headquartered
LocationHeadquarters
- HQ city
- San Francisco
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
eM Client, Inc. business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure
Revenue model
- Software License Sales: eM Client sells Personal and Business licenses with two pricing models: (1) Subscription plan - annual recurring payments that include access to the purchased version and all future major versions and updates; (2) Fixed/One-time price plan - single payment for the purchased version only, with optional Lifetime Upgrade add-on for ongoing major version access. Additional device activations can be purchased separately for Business Licenses. Extra add-ons (AI features, VIP support extensions, extra AI credits) are available as recurring add-on purchases.
- AI Add-on and Credits: AI features are available as a separate paid add-on to Personal or Business licenses. Extra AI credits can be purchased additionally on a pay-per-use basis.
- VIP Support Extension: Extended VIP support beyond the included initial support period can be purchased as a recurring 12-month add-on extension.
- Free Tier (Mobile): The mobile app (iOS and Android) is currently provided completely free, serving as a product-led growth channel to drive conversion to paid desktop licenses.
- Partner Program / Reseller Revenue: Partners in the Authorized, Silver, and Gold tiers purchase credits (1 USD = 1 Credit) to issue licenses to end customers, earning margins of 30-45% on sales.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Others | Free - Non-commercial personal use with limited features |
| Subscription | Annual | Personal - For independent professionals and freelancers |
| Subscription | Annual | Business - For corporate and workplace environments |
| One time/ perpetual license | Others | Lifetime Upgrade - One-time upgrade plan for major versions |
| Unit Pricing | Others | Additional Devices - Expand Business License device count |
| Subscription | Annual | AI Add-on - AI features for Personal and Business licenses |
| Subscription | Annual | VIP Support Extension - 12-month extended support renewal |
| Freemium | Others | Mobile App - iOS and Android |
Go-to-market motion2 records
Distribution channels5 records
Marketing channels8 records
eM Client, Inc. product offering
Product offeringCore offering
eM Client develops and sells a cross-platform desktop and mobile email client that combines email, calendar, contacts, tasks, notes, and chat into a single productivity application. The product runs natively on Windows, macOS, iOS, and Android, integrates with Google Workspace, Office 365, Outlook, and Exchange, and is offered under Free, Personal, and Business licenses with optional AI, VIP Support, and Lifetime Upgrade add-ons.
Product overview
eM Client, Inc. offers a single unified desktop email client product available for Windows, macOS, iOS, and Android. The core eM Client Application combines email management with calendar, tasks, contacts, notes, and chat features into an all-in-one productivity tool. The company provides multiple licensing tiers (Free, Personal, Business, Trial) along with optional add-ons including an AI Add-on for AI-powered email assistance, VIP Support, and Lifetime Upgrades. The product integrates natively with Google Workspace, Office 365, Microsoft Outlook, and Microsoft Exchange, with Webex meeting integration also available.
Differentiator
Problem solved
Functional benefit
Products and services
- eM Client Desktop Application A fully-featured desktop email client for Windows and macOS that combines email, calendars, tasks, contacts, notes, and chat in a single productivity tool for individual professionals, freelancers, and businesses.
- eM Client Mobile App (iOS and Android) A mobile application for iOS and Android that brings the eM Client desktop experience to smartphones and tablets, enabling users to manage email, calendars, contacts, and tasks on the go; offered free on app stores.
Quantifiable outcome
- Over 100,000 businesses and 4,000,000 users globally
Companies that use eM Client, Inc.
Customer profileNamed customers11 records
Segments3 records
Ideal customer profiles2 records
eM Client, Inc. technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration5 records
AI capability3 records
Feature15 records
eM Client, Inc. partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered core.
- Postbox Inc.coreeM Client acquired Postbox Inc., a desktop email client company, in October 2024. Postbox is a macOS email client application. The transaction broadens eM Client's product portfolio and may extend its reach in the macOS email client market.
- Google Workspace / GmailcoreeM Client integrates with Google Workspace and Gmail, supporting OAuth authentication, Gmail-style inbox categories, and synchronization of email, calendar, and contacts. The application adheres to Google API Services User Data Policy including Limited Use requirements.
- Microsoft Office 365 / ExchangecoreeM Client provides deep integration with Microsoft Office 365 and Exchange/Outlook, supporting full email, calendar, contacts, and task synchronization for enterprise environments.
- Microsoft Azure OpenAIcoreeM Client's AI features are powered by Microsoft Azure OpenAI service. The company integrates Azure OpenAI for AI-powered capabilities including email summarization and smart replies.
- Firebase (Google Cloud Messaging)coreFirebase Cloud Messaging is used to deliver push notifications to iOS and Android mobile devices. eM Client has passed Google's mandatory security review for Firebase integration, and Firebase is used as the final delivery layer for mobile notifications.
- Slack, MS Teams, Rocket.ChatcoreeM Client integrates with popular team chat platforms Slack, Microsoft Teams, and Rocket.Chat, allowing users to search and interact with messages from these platforms directly within the eM Client interface.
Scale indicators3 records
Recent moves6 records
Expansion highlights6 records
eM Client, Inc. competitors and assessment
Company assessmentBroad incumbents
- Apple Mail: Default macOS/iOS email client bundled with Apple platforms. Competes with eM Client for macOS and iOS users who don't want a paid third-party client, and is a primary free alternative.
- Microsoft Outlook (Microsoft 365): The dominant desktop and mobile email/calendar client, bundled with Microsoft 365 and deeply integrated with Exchange, Outlook.com and Windows. Overlaps directly with eM Client across email, calendar, contacts and tasks, but operates at vastly greater scale with bundled pricing.
- Gmail (Google): Web and mobile email client bundled with Google Workspace, dominating consumer and SMB email. The free alternative eM Client is most often positioned against, particularly via Gmail-style inbox categorization and Workspace integration.
Direct peers
- Mozilla Thunderbird: Free, open-source desktop email client supporting multiple accounts, calendar, and add-ons across Windows, macOS and Linux. Closest direct peer to eM Client in terms of being a third-party multiplatform email client with power-user features.
- Spark Mail (Readdle): Cross-platform email client (macOS, iOS, watchOS) with team collaboration, smart inbox and AI features. Directly comparable to eM Client on the productivity email client category for individuals and teams.
- Postbox (now eM Client subsidiary): macOS-focused desktop email client acquired by eM Client in October 2024. Historically a direct competitor in the macOS power-user email-client category and now the anchor's wholly-owned subsidiary.
- The Bat! (RITLabs): Long-standing Windows email client emphasizing security, PGP encryption and power-user filtering. Comparable to eM Client's focus on encrypted, multi-account, productivity-rich email on Windows.
- Mailbird (Errno): Windows-only desktop email client with unified inbox, app integrations and productivity features. Competes head-to-head with eM Client on the Windows desktop email-client category for individual professionals and SMBs.
Emerging players
- Newton Mail: Cross-platform (iOS, macOS, Android) email client with AI-powered productivity and unified inbox. Comparable niche competitor to eM Client in the third-party email-client market with a similar AI-productivity angle.
- Spike: Conversational email and team messaging platform that converts email threads into chat-like threads with built-in collaboration. Adjacent competitor to eM Client in the team productivity/email space, sharing the 'email + chat + notes' bundle.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks7 records
Key highlights7 records
Customer concentration
eM Client, Inc. social profiles
Digital presenceeM Client, Inc. compliance and trust
Trust signalCompliance4 records
eM Client, Inc. financial estimates
Financial estimateRevenue estimate
Valuation estimate
eM Client, Inc. leadership team
Management profileNumber of profiles
Profiles3 records
eM Client, Inc. subsidiaries and ownership
Company hierarchySubsidiaries1 record
eM Client, Inc. funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
eM Client, Inc. M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about eM Client, Inc.
What does eM Client, Inc. do?
eM Client develops and sells a cross-platform desktop and mobile email client that combines email, calendar, contacts, tasks, notes, and chat into a single productivity application. The product runs natively on Windows, macOS, iOS, and Android, integrates with Google Workspace, Office 365, Outlook, and Exchange, and is offered under Free, Personal, and Business licenses with optional AI, VIP Support, and Lifetime Upgrade add-ons.
Is eM Client, Inc. a public or private company?
eM Client, Inc. is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was eM Client, Inc. founded?
eM Client, Inc. was founded in 2007. It employs 1 to 10 people.
Where is eM Client, Inc. based?
eM Client, Inc. is headquartered in San Francisco, United States, in the North America region.
How does eM Client, Inc. make money?
Five revenue lines are on record. Software License Sales are the primary driver. The others are AI Add-on and Credits, VIP Support Extension, free Tier (Mobile) and partner Program / Reseller Revenue.
Who are eM Client, Inc.'s main competitors?
Broad incumbents on record are Apple Mail, Microsoft Outlook (Microsoft 365) and Gmail (Google). Direct peers are Mozilla Thunderbird, Spark Mail (Readdle), Postbox (now eM Client subsidiary), The Bat! (RITLabs) and Mailbird (Errno). Emerging players are Newton Mail and Spike.
Does eM Client, Inc. have an API?
No public API is recorded for eM Client, Inc..
What industry is eM Client, Inc. in?
eM Client, Inc.'s product category is Email Client Software. Its primary akta.pro industry code is BPAMAMAC, Email, Calendar & Scheduling. Its NAICS code is 5132 and its SIC code is 7372.