Superhuman: AI Email Client for Maximum Productivity

Superhuman is a high-performance application for email management. Designed to offer the fastest and most efficient experience in the world, this tool was created for professionals and teams wanting to optimize their time, maintain focus and respond more agilely, all with the help of artificial intelligence.

In an environment where small businesses and entrepreneurs face constant message overload, email remains a critical source of communication with clients, partners and suppliers. However, it also represents one of the biggest operational time losses. Here comes Superhuman, a platform that redefines email management through a combination of speed, native AI, minimalist design and intelligent automation.

This review analyzes how its AI, productivity features and focus on speed can benefit SMEs and independent professionals, as well as its limitations in localization and price, to determine if it really is the best AI tool for email management in its segment.

AgentAya Verdict: Superhuman

Superhuman delivers on its promise of being an ultra-fast email client focused on productivity. Its design relies on its native artificial intelligence to draft, summarize, translate and organize emails with precision, translating to up to four hours saved per person each week. The tool also improves collaboration, accelerates email response and reduces negotiation cycles by up to 25%. Its focus is clear: speed, efficiency and total control, with an environment combining minimalist design and optimized keyboard architecture. However, that same specialization makes it less accessible for users preferring traditional visual interfaces or fully localized environments in other languages.

For founders, startups and SMEs handling high email volume and valuing immediacy, Superhuman can become a strategic ally. Its adoption requires some initial adaptation, but the return in efficiency and focus more than compensates.

Score Breakdown

Category	Score	Description
Features and Functionality	⭐⭐⭐⭐⭐ (5.0)	Total focus on speed, AI and email automation
Integrations	⭐⭐⭐ (3.0)	Works with Gmail, Outlook, Zoom and native calendars
Language and Support	⭐⭐ (2.0)	Primarily in English
Ease of Use	⭐⭐⭐⭐ (4.0)	Fast and efficient, with initial learning curve
Value for Money	⭐⭐⭐ (3.0)	Premium and powerful, but high cost for small SMEs

AgentAya Overall Score: ⭐️⭐️⭐️⭐️ 4.0 / 5

Excellent for demanding users prioritizing speed and control.

Main Features of Superhuman

• Minimalist and organized inbox: with Split Inbox, Auto Labels and Auto Archive to separate essential emails from promotions and notifications.
• 100% keyboard navigation: each action can be performed with quick commands, reducing mouse use and accelerating workflow.
• Instant Reply: each email arrives with an AI-generated response draft that the user can review or send directly.
• Scheduled sending and « Send Later »: schedule emails for the most appropriate moment, with automatic time zone and schedule detection.
• Reminders and automatic follow-up: Follow Up Reminders alerts when an email hasn’t been responded to within expected time.
• Snippets and Autocomplete: insert predefined responses or phrases to maintain team tone consistency.
• Superhuman Calendar: direct integration with your calendar, allows creating events with one click, viewing availability and sharing schedules.

These functions allow SMEs and sales teams to drastically reduce time invested in email management and achieve more closings with less friction.

AI Functions

Superhuman’s artificial intelligence is the product’s core, not an add-on. Among its most relevant capabilities:

• Write with AI: converts ideas or loose phrases into complete emails with natural tone, adapting style to user’s.
• Rewrite in my voice: rewrites messages imitating sender’s tone, rhythm and vocabulary.
• Auto Summarize: generates a one-line summary above each thread; automatically updates as new emails arrive.
• Ask AI: allows asking for information within email or calendar (« when is the Q4 meeting? ») without manual searching.
• Translate and Fix grammar: translates or corrects texts in multiple languages with a single command.
• Instant Reply: creates automatic drafts for all pending emails when starting the day.

These functions not only save time, but reduce errors and elevate communication quality. Most notable is that AI never sends messages on its own: final control always remains with the user.

Integrations

Superhuman integrates natively with Gmail and Microsoft Outlook, as well as key productivity and sales tools: Salesforce, HubSpot, Pipedrive, Grammarly, Zoom, Google Meet and Microsoft Teams.

These integrations allow accessing customer context without leaving email: view contact history, automatically log emails in CRM or schedule meetings without changing windows.

Additionally, it offers compatibility with Google Advanced Protection and support for Team Snippets, allowing sharing text fragments and templates between members of the same team. Although it doesn’t have a public API, it has sufficient native connectors to cover the most common workflows in SMEs.

Security and Data Compliance

Superhuman positions itself with enterprise security standards and strict compliance:

• Encryption in transit and at rest both in transit and at rest.
• SOC 2 compliance and security architecture aligned with corporate best practices.
• Zero Day Data Retention: data isn’t retained by OpenAI or used for training. Instant Reply and Auto Summarize responses are saved 90 days to re-display them.
• Multi-factor authentication and granular access control.
• Total data ownership: client maintains control of all processed content.
• Protection with Google Advanced Protection for linked accounts.

Superhuman also clarifies that neither they nor OpenAI train models with your data. AI queries and responses are deleted or maintained only the necessary time to function (maximum 90 days in certain Auto Summarize cases).

If necessary, the user can request complete deletion of their data.

Language – Customer Support and Interface

Superhuman’s interface (menus, panels, settings) is only in English. Official support is available in English, but some introductory resources, tutorials and quick guides are translated to other languages. It has a Help Center, support chat, technical documentation, and a YouTube channel with tutorials and demonstrations.

Enterprise users access productivity sessions, personalized onboarding assistance and a dedicated account manager. Although live support isn’t fully localized, response is quick and tone highly personalized.

AI Language – The Tool Itself

Its artificial intelligence and autocorrect function are multilingual. The autocorrector supports eleven languages: Dutch, English, French, German, Italian, Norwegian, Polish, Portuguese (Brazil and Portugal), Spanish and Swedish. Additionally, AI can draft and translate complete emails to multiple languages.

This allows international SMEs to maintain fluid communication with clients in different countries, even though the general environment remains in English.

Mobile Access

Superhuman offers native applications for iOS and Android, with almost all functions available on desktop. The mobile app allows drafting emails with AI, reviewing summaries, scheduling sends and maintaining complete synchronization with Gmail and Outlook.

Mobile performance is one of the best in its category: loading is instant, actions execute in seconds and design maintains its minimalist philosophy.

Support, Onboarding Process, and Account Management

Superhuman’s onboarding process is considered one of the most polished in the SaaS ecosystem. It offers 1:1 guided assistance, personalized training, educational videos and access to its help center with interactive tutorials.

For enterprise teams, it includes:

• Dedicated account manager and customer success
• Periodic productivity check-ins
• Team training
• Centralized user and permission management

The onboarding experience is designed so even users without technical experience adopt the tool without difficulty.

Ease of Use / UX

Superhuman stands out for an ultra-fast, clean interface without distractions. Everything is designed to minimize clicks and maintain attention on essentials. The initial learning curve (shortcuts, commands and keyboard flow) is compensated with exceptional speed in a few days.

The user experience feels « instant »: writing, archiving or responding executes in milliseconds. Additionally, integrated AI makes drafting or responding as fluid as talking with a personal assistant.

Pricing and Plans

Superhuman offers monthly and enterprise subscription plans, oriented to both individuals and teams.

• The standard plan includes all main features and technical support.
• The enterprise plan adds advanced AI features, CRM integration, security controls and centralized administration.

Superhuman for Startups offers one free year of the Business plan for companies with fewer than 50 employees and up to 10 million dollars in funding.

Case Study

A digital marketing consultancy implemented Superhuman for its team of six executives. Previously, each person spent over two hours daily cleaning and classifying emails. With Superhuman, they managed to reduce management time by 50% and increase response rate by 30%.

Thanks to features like Auto Summarize, Instant Reply and Follow-Up Reminders, the team kept their inbox organized and could respond faster to key clients. On average, they saved over 12 hours per week.

Superhuman Comparison

Tool	Strengths	Weaknesses
Superhuman	Native AI, extreme speed, CRM integration, SOC 2 security, enterprise support	Premium price, interface only in English, no unified inbox
Mailbutler	Deep integration with Apple Mail and Gmail, email tracking, reports and reminders	Less speed and automation compared
Mailchimp	Powerful for marketing and campaign automation, ideal for newsletters	Not an email client, but a marketing platform

Superhuman continues being the reference in personal productivity and business communication, while Mailbutler stands out for its adaptability to different email clients and Mailchimp for its focus on mass marketing.

Frequently Asked Questions

How can I connect additional email accounts to Superhuman? 

You can manage Gmail or Outlook accounts, whether work or personal. To add an account on a desktop, press Cmd+K (Mac) or Ctrl+K (Windows), select « Add account » and access it with Google or Microsoft. On mobile, press and hold the account icon, tap « Accounts » and then « Add account ». Only Gmail and Microsoft 365 accounts are supported. There’s no unified inbox, but you can use tabs to view multiple mailboxes.

Is it compatible with my email client/operating system/browser? 

Superhuman supports Gmail and Microsoft 365 accounts, and works through dedicated apps for desktop and mobile.

Can I use it on multiple computers? 

Yes. Superhuman works on both desktop and mobile, allowing you to log in from different devices. The process for adding and changing accounts is documented for both platforms, so you can access your email on multiple computers or phones.

Does the tool have artificial intelligence? What does it do? 

Superhuman includes artificial intelligence that helps you draft, rewrite and summarize emails, improve tone and respond faster. It assists in prioritization and follow-up, but you maintain control: AI doesn’t send emails or execute workflows by itself.