You open your inbox and 200 unread emails stare back at you. The average knowledge worker checks email 77 times per day while handling 121 new messages daily.
Both Fyxer and Superhuman Mail promise to solve email overload with AI. But they take fundamentally different approaches. Fyxer adds an AI layer on top of Gmail and Outlook, automatically sorting messages and drafting replies. Superhuman Mail replaces your email client entirely with a purpose-built platform designed around speed, keyboard navigation, and a comprehensive AI feature set.
This comparison examines what each tool actually does, where each excels, and which workflows each serves best.
The fundamental difference: Overlay vs platform
Before comparing individual features, it helps to understand the architectural difference between these tools.
- Fyxer operates as an overlay. It works within Gmail and Outlook, adding AI capabilities to your existing email interface. This means you keep your familiar environment, but you're also bound by the limitations of legacy email platforms. You can't reorganize your inbox beyond what Gmail or Outlook allows, and you don't get the speed benefits of a purpose-built interface.
- Superhuman Mail is a complete email platform. It provides native desktop apps for Mac and Windows, plus iOS and Android mobile apps. Because Superhuman controls the entire experience, it can optimize for speed in ways that overlay tools cannot. The interface is built around keyboard shortcuts that eliminate mouse clicks, and AI features work seamlessly in the background without requiring you to leave your inbox.
This distinction matters for daily email processing. If you're handling hundreds of messages, the cumulative effect of a faster interface adds up significantly.
What is Fyxer?
Fyxer automatically sorts your Gmail or Outlook inbox and drafts AI responses for you. The system categorizes incoming messages into groups like "To Respond," "Notification," "FYI," and "Marketing." When emails land in the "To Respond" category, Fyxer automatically drafts replies that adapt to your communication style based on your sent emails.
Beyond inbox organization, Fyxer includes meeting management features like note capture, automatic follow-ups, and meeting summaries. It tracks emails you've sent that haven't received replies and drafts follow-ups for you.
The Professional tier adds Fyxer Chat, which lets you ask questions about your inbox and meetings and draft new emails from scratch using text or voice. Professional also includes AI-powered scheduling that suggests meeting times based on your calendar, handles multi-attendee availability, and manages time zones automatically.
Fyxer targets professionals who handle heavy email volumes and want AI assistance within their existing Gmail or Outlook workflow without switching to a new email client.
What is Superhuman Mail?
Superhuman Mail is a complete email platform built for speed. The entire interface centers on keyboard-driven navigation, with extensive shortcuts for every action. Rather than layering onto existing email clients, Superhuman provides a complete email experience across desktop and mobile.
Split Inbox divides your email into customized sections, separating Important messages from Other, plus optional splits for Team, VIP, Calendar, News, and custom categories you define. This helps you prioritize what matters without manual sorting.
Superhuman's AI works automatically in the background. Auto Summarize condenses long email threads into key points. Instant Reply generates draft responses in your voice. Auto Reminders and Auto Drafts ensure you never forget to follow up on important messages.
The platform integrates with Salesforce and HubSpot for sales teams, and includes a built-in calendar for managing meetings without leaving your inbox.
Superhuman vs Fyxer - Side-by-side feature comparison
AI capabilities: Where the differences matter
Both tools use AI to draft emails. How they implement AI features differs significantly, and those differences affect your daily workflow.
Search and organization
Superhuman includes Ask AI, a semantic search feature that lets you query your inbox in natural language. Instead of remembering exact keywords or sender names, you can ask questions like "What did John say about the budget?" or "Find emails about the Q3 launch." Ask AI searches up to 5 years of email history and combines information from your inbox, calendar, and the web.
Fyxer offers Fyxer Chat on its Professional tier, which provides similar question-and-answer functionality across your inbox and meeting notes. You can ask questions like "What did Sam say about budget?" and draft emails from context.
Both tools offer AI-powered search, though Superhuman's is available on all tiers, while Fyxer reserves this for Professional and above.
For organization, Fyxer automatically sorts emails into predefined categories like "To Respond," "FYI," "Notification," and "Marketing." You can choose which categories stay in your inbox and which get moved to folders. However, you cannot create fully custom categories with your own naming and AI criteria.
Superhuman's Auto Labels work differently. You get built-in labels like Marketing, Pitch, and Social, plus you can create unlimited custom labels using AI prompts or deterministic criteria.
This means you can automatically tag emails about "Project Acme" or "Requests to review work" and route them to specific splits. For workflows that require distinguishing between investor emails, customer emails, and team updates with your own naming conventions, this flexibility matters.
Automatic drafting and follow-ups
Both tools draft AI replies and offer follow-up automation. Fyxer analyzes your sent emails to match your writing style, then automatically generates drafts for messages needing responses. It also tracks emails you've sent that haven't received replies and drafts follow-ups for you after a few days.
Superhuman offers Instant Reply, which generates draft responses matching your voice and tone. Its Auto Reminders and Auto Drafts feature works similarly to Fyxer's follow-up tracking, returning unanswered emails to your inbox and drafting follow-ups in your voice.
The key difference is where this happens. Superhuman's follow-ups appear within its purpose-built interface with full keyboard navigation. Fyxer's drafts appear in your Gmail or Outlook drafts folder, keeping you within your existing email client.
Writing assistance
Both tools offer on-demand AI drafting beyond automatic replies.
Superhuman's Write with AI activates with Cmd+J (Mac) or Ctrl+J (Windows) while composing a message. You can type a brief prompt, and Superhuman drafts a complete email. The AI learns from your actual writing patterns to better match your voice over time.
Fyxer's Chat feature (Professional tier) lets you draft new emails from scratch or based on context, using text or voice input. Drafts are saved to your email drafts folder for review.
Email summaries
Superhuman's Auto Summarize automatically condenses long email threads into key points. When you open a lengthy conversation, you see the essential information extracted without scrolling through dozens of messages.
Fyxer focuses its summarization on meetings rather than email threads. After video calls, it provides detailed meeting summaries and auto-drafted follow-up emails. For email thread summarization specifically, Superhuman has the advantage.
Keyboard shortcuts: Speed through your inbox
Processing 121 daily emails means every mouse click compounds into hours of wasted motion. Keyboard shortcuts transform email from a click-heavy chore into a flow state experience.
Superhuman's platform is built around keyboard-driven navigation. Nearly every action maps to a shortcut:
- Cmd+K (Mac) or Ctrl+K (Windows) opens the command palette for instant access to any feature
- E archives a message
- H sets a reminder
- J moves to the next conversation
- Cmd+J activates Write with AI
- Tab moves between inbox splits
- B creates a calendar event from an email
A learning tip bar helps you discover shortcuts as you work. Your hands stay on the keyboard, your eyes stay on the content, and you process messages faster.
Fyxer operates within Gmail and Outlook, so you use those clients' native keyboard shortcuts. Gmail offers shortcuts like 'c' for compose and 'e' for archive; Outlook has its own set. However, these weren't designed around the kind of rapid-fire email processing that Superhuman enables. There are no dedicated shortcuts for Fyxer-specific features like triggering AI drafts or navigating between categories.
For professionals managing high email volumes, keyboard mastery is the difference between tools that feel fast and tools that are genuinely fast.
Calendar integration: Scheduling without switching apps
Email and calendar are deeply connected. Most emails involve either discussing meetings or scheduling them. Having to switch between apps creates friction.
Superhuman includes a built-in calendar that displays your schedule in a sidebar. You can view your day, week, and manage events without leaving your inbox. Hit 0 to see today's schedule. Hit 2 to see your week.
Instant Event creates calendar events directly from emails. When you hit B in an open conversation, Superhuman AI automatically fills in the recipients, suggests meeting times based on everyone's availability, and adds a summary of the meeting's purpose based on the thread. This eliminates the back-and-forth of scheduling.
Fyxer takes a different approach. Rather than a built-in calendar view, Fyxer's Professional tier includes AI-powered scheduling that works within your email drafts. When you need to schedule a meeting, Fyxer can suggest times based on your connected Google or Outlook calendar, handle multi-attendee availability, and manage time zones automatically.
You can also share a personal booking link or forward emails to Fyxer's scheduling address to generate reply drafts with proposed times. However, you still view and manage your calendar through Gmail or Outlook rather than within a unified inbox interface.
Team collaboration: Working together on email
Email has traditionally been a solo activity. You receive a message, respond, and forward to colleagues when needed. Modern teams need more sophisticated collaboration without leaving their inbox.
Superhuman's Shared Conversations and Team Comments allow you to share any email conversation with teammates and comment directly on messages. This creates threaded discussions attached to the email itself, eliminating forwarding chains and lost context.
When three team members need to align on a response to a client email, traditional approaches involve forwarding the message, discussing in Slack, drafting in a Google Doc, then copying back to email. Superhuman collapses this into a single collaborative space. Team members without Superhuman accounts can still participate via a shared link.
Additional team features include Team Snippets for shared response templates, Team Read Statuses so everyone sees when critical messages are opened, and Team Reply Indicators that show when teammates are already drafting a response.
Fyxer's team functionality focuses on AI learning rather than real-time collaboration. When deployed across a team, Fyxer learns from collective communication patterns to write better emails and meeting notes. The Enterprise tier includes centralized admin controls for configuring permissions, security settings, and usage policies from a single dashboard. However, features for real-time comment sharing on individual email threads and live collaboration on responses aren't part of the current product.
Pricing comparison
Superhuman Mail
- Starter: $25 per user monthly (billed annually)
- Business: $33 per user monthly (billed annually)
- Enterprise: custom pricing
Fyxer
- Starter: $22.50 per user monthly (billed annually) for one inbox and calendar
- Professional: $37.50 per user monthly (billed annually) for multiple inboxes, HubSpot integration, Fyxer Chat, and AI scheduling
- Enterprise: $50 per user monthly (billed annually, minimum 50 users) with SSO, SCIM, and dedicated support
Superhuman's Starter and Business tiers include all AI features. Fyxer reserves some capabilities like multiple inbox support, HubSpot integration, AI scheduling, and its Chat feature for the Professional tier and above.
Platform availability: Where you can use these tools
Superhuman offers native desktop apps for Mac and Windows, plus iOS and Android mobile apps. The mobile apps include full calendar integration, letting you manage email and scheduling from a single interface. For executives who process email between meetings, in transit, and during travel, dedicated mobile apps with the same keyboard-optimized design philosophy matter.
Fyxer integrates with Gmail and Outlook, so you can access your AI-organized inbox through those apps on any device. Your categorized emails and AI drafts sync across platforms since they live in your Gmail or Outlook account. Fyxer also has a dashboard for settings and accessing Fyxer Chat, but your primary email experience stays within Google or Microsoft's apps.
Decision framework: Matching tools to workflows
Different email workflows demand different capabilities. Here's how to match your needs to the right tool.
Choose Superhuman Mail if you
- Process 100+ emails daily and want a purpose-built speed-optimized interface
- Value extensive keyboard shortcuts and want to minimize mouse usage
- Need AI search across 5 years of email history on any pricing tier
- Want automatic email thread summaries (not just meeting summaries)
- Require team collaboration features for commenting on shared email threads
- Need a built-in calendar view within your inbox and one-click event creation from emails
- Use Salesforce and want CRM data in your inbox
- Need custom inbox organization with your own label names and AI criteria
- Want read receipts and optimal send timing to know when prospects engage
Consider Fyxer if you:
- Prefer staying within your existing Gmail or Outlook interface
- Want AI assistance without switching to a new email client
- Value meeting transcription with auto-generated follow-up emails
- Prefer a tool with no learning curve that works inside familiar apps
For sales teams specifically, Superhuman's integration with Salesforce and HubSpot combined with Smart Send (which optimizes send timing based on recipient activity) and Read Statuses (which show when prospects open your emails) make it purpose-built for deal acceleration.
The bottom line
Both Fyxer and Superhuman Mail offer AI-powered email drafting, follow-up automation, and intelligent organization. They solve similar problems through fundamentally different approaches.
Fyxer works as an AI layer inside your existing Gmail or Outlook, adding smart categorization, auto-drafting, meeting notes, and follow-up tracking without requiring you to change email clients. Its Professional tier adds Fyxer Chat for inbox questions and on-demand drafting, plus AI-powered scheduling with multi-attendee availability and time zone handling. For users who want AI assistance while staying in familiar tools, this approach minimizes disruption.
Superhuman Mail replaces your email client entirely with a purpose-built platform optimized for speed. The keyboard-driven interface, built-in calendar, automatic email thread summaries, team collaboration tools, and unlimited custom labels create capabilities that aren't possible within legacy email platforms. For high-volume email users who want maximum speed and flexibility, the dedicated platform delivers features that an overlay cannot.
The choice comes down to whether you want AI enhancements within your current email setup or a fundamentally different and faster way to handle email altogether.
Try Superhuman Mail and see the difference
