One billion professionals around the world spend 3+ hours a day on email. The inbox is critical to how we work, but the way most of us use email hasn't changed since the days of dial-up internet.

There's an immense opportunity to improve the quality and efficiency of the time spent in your inbox. That's why for the past decade, Superhuman has relentlessly focused on building the most productive, most delightful email experience ever made.

How does Superhuman compare to Notion Mail? Let's cover the core features and benefits, so you can choose the best email solution for you and your team.

Speed & performance

Superhuman — blazingly fast

Superhuman was built from the ground up with a non-negotiable priority: speed.

Superhuman is blazingly fast — built so that every interaction feels instantaneous. We pioneered just how fast email could be, and continue to save teams over 15 million hours in their inbox every single year.

• Instantaneous, delightful UX with no typing lag
• Keyboard shortcuts that let you fly through your inbox
• Rapid AI-powered search
• Offline mode for uninterrupted productivity anywhere you work
• Optimized performance across every device, every touch

Notion Mail — promising but unproven

While Notion brings a flexible approach to the inbox and will feel comfortable to existing Notion users, its performance is as yet unproven.

Speed and performance are critical for professionals who spend hours in their inbox each day. Early users will be on the lookout for slow loading times, typing lags, and reliability issues.

Notion Mail does not support offline work, so your productivity will be interrupted when your internet connection is patchy or unavailable.

Collaboration features

Superhuman — unmatched for teams

Superhuman helps teams be more responsive, save time, and collaborate more effectively.

With Shared Conversations and Team Comments, you can efficiently collaborate on emails in email — without the need to forward, bcc, or switch to another app.

Shared Drafts lets teams rapidly align and craft the perfect message. Effortlessly get the input you need.

With Team Snippets, you can easily share templates across your organization. You can even see analytics, so you know which outreach is performing best. Move faster and stay consistent with your messaging.

Team Reply Indicators show you when a teammate is drafting a reply or has scheduled a message. No more double-ups.

With Team Read Statuses, you can see at a glance when and how people read your emails. Easily stay in the loop and collaborate more effectively.

Superhuman's CRM integrations give you full customer context from Salesforce, HubSpot, and Pipedrive — without leaving Superhuman. Spend less time on CRM updates, more time selling.

Notion Mail — currently no features for working together

Despite Notion's collaborative focus in its main product, Notion Mail currently lacks team email features.

AI features

Superhuman — AI-native and leading the way

From Auto Summarize to Ask AI to the latest evolution of Superhuman AI, Superhuman has developed and meticulously refined the market-leading AI inbox assistant.

Superhuman AI writes and edits in your own voice and tone. It even tailors its responses by each recipient, so it always knows how to sound like you.

Our product data shows that customers who use AI respond to email twice as fast as those who don't. And our most productive customers use Superhuman's AI features 2.5x more often.

With Ask AI, you can stop searching and start asking. Get rapid answers without having to remember senders, guess keywords, or scan subject lines. You can even ask about multiple emails and calendar events.

Auto Summarize shows a 1-line summary above every new email. As new emails arrive, it updates instantly. And if you want to see more detail, just hit expand.

With Instant Event, you can schedule meetings with just a tap. AI helps by picking a title, description, location, attendees — as well as the best date and time — all from your email. And if you're scheduling with your team? We'll find a great time when you're all free.

With Auto Labels, Superhuman automatically helps organize incoming email, so you can focus on what matters most. Marketing, cold pitches, and social network updates are labeled and separated. You can even make your own Auto Labels with short AI prompts like "job applications" or "requests to review work".

Auto Reminders and Auto Drafts mean you'll never drop the ball again. If your email needs a response, we'll automatically remind you to follow up. We'll even write the email for you, so all you need to do is hit send.

For professionals and teams, AI is no longer optional. Our 2025 State of Productivity & AI Report found that B2B professionals are already saving about one day per week with AI, and top performers are using the best AI in their core tools to lead a revolution in work. Teams need to equip themselves with the best tools now or get left behind.

Notion Mail — good potential

Notion Mail has AI features that support organizing your inbox. Notion Mail's support of Auto Labels with Views mirrors the functionality of Superhuman's Auto Labels and Split Inbox — offering helpful automation in sorting incoming mail.

Notion Mail offers an AI writing assistant, which can help edit and refine text. It's currently unclear to what extent it can match your voice and tone, or to adapt its suggestions based on who you're communicating with.

To date, Notion Mail lacks capability for AI search, automatic summaries of emails and conversations, and automatically drafting replies or reminding you to follow up. Notion Mail's scheduling features don't include AI assistance for finding the ideal meeting time for recipients and your team.

Platform availability & flexibility

Superhuman — for multiple Gmail and Outlook accounts

Superhuman works seamlessly with Gmail and Outlook accounts, with any combination of {Mac, Windows, Web} × {iOS, Android}. You can manage multiple accounts from the one blazingly fast interface.

Superhuman's Offline Access means you can work uninterrupted, anywhere, any time — on planes, between meetings, or in taxis with a poor connection.

Notion Mail — for one Gmail account only

Notion Mail currently only works with a Gmail integration. There is no support for Outlook users.

Notion Mail isn't designed to easily support multiple accounts, so if you manage a few inboxes, you might need to maintain different apps and workflows.

Notion Mail does not offer a mobile app yet, though it plans to release apps for iPhone and Android some time in 2025.

Notion Mail has no offline mode, so users will experience some performance issues when the internet connection is unreliable.

Support & onboarding

Superhuman — loved and personalized

Superhuman offers best-in-class support and onboarding. People often rave about how our Delight team helps them become more productive, every single day.

We offer 1:1 training in our team features and host regular events on getting the most out of every minute in your inbox. You can check out some past events here and here.

Superhuman is enterprise grade. We offer large teams 24/7 concierge support, advanced security and access management, and comprehensive regulatory compliance.

Notion Mail — basic support

Notion is expected to offer standard support, with great documentation but few opportunities for 1:1 or team trainings.

As Notion provides multiple products, it's unclear how focused on productivity in email the support offerings will be.

Release date

Notion Mail launched in beta in late 2024 and has plans to launch broadly in 2025.

Superhuman has meticulously built the most productive AI-native email app since its launch in 2014.

The bottom line

Notion Mail brings flexibility to your inbox setup and is a promising alternative interface for Gmail users. Frequent users of Notion who don't need team inbox features might find it a refreshing upgrade from Gmail.

Superhuman is the most productive AI-native email app ever made. Teams on Gmail and Outlook rely on Superhuman to save 4 hours per person every single week, respond 12 hours faster, and respond to twice as many emails in the same amount of time.