Superhuman

The most productive email app. Save 4 hours a week.

4.8•86 reviews•

3.9K followers

The most productive email app. Save 4 hours a week.

4.8•86 reviews•

3.9K followers

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Superhuman is the most productive email app ever made. Fly through your inbox, with powerful AI features for writing, summarizing, replying, and searching. Be more responsive to what matters most, with Split Inbox and follow-up Reminders. And collaborate faster than ever before, with Team Comments. Superhuman works seamlessly with Gmail and Outlook, and helps teams save four hours per person, every single week.

The Best Superhuman Alternatives

The best Superhuman alternatives are Shortwave, Spark, Missive, MailMaestro, and Inbox Zero.

Shortwave

4.7 ·

Choose Shortwave if...

✓you want GTD-style bundles and big-picture triage
✓you prefer scheduled delivery to batch incoming email
✓AI summaries matter more than AI writing

See details ↓

Spark

4.1 ·

Choose Spark if...

✓you manage many accounts across multiple devices
✓you want gatekeeper approval for new senders
✓you like smart inbox grouping for newsletters

See details ↓

Missive

4.6 ·

Choose Missive if...

✓you need shared inboxes with internal team chat
✓you want assignments, accountability, and escalation workflows
✓you’re replacing Intercom with email-centric collaboration

See details ↓

MailMaestro

5.0 ·

Choose MailMaestro if...

✓you want AI writing inside Gmail or Outlook
✓you hate switching between ChatGPT and email
✓you write professional emails in multiple languages

See details ↓

Inbox Zero

4.8 ·

Choose Inbox Zero if...

✓you need a fast unsubscribe and declutter reset
✓you want open-source and self-hostable privacy
✓you prefer sender-based bulk cleanup views

See details ↓

What to Consider

Superhuman set the bar for a premium, keyboard-first email experience built to help power users fly through triage, search, and follow-ups. But the alternatives landscape is less about “faster inbox” and more about choosing an email philosophy: Shortwave leans into GTD-style organization with bundles and scheduled delivery plus lightweight AI summaries, Spark optimizes for multi-account convenience and noise control across devices, Missive turns email into a team collaboration hub with shared inbox workflows, MailMaestro adds AI drafting and summaries directly inside Gmail/Outlook, and Inbox Zero focuses on fast decluttering with an open-source/self-hostable privacy angle.

In evaluating Superhuman alternatives, we considered how each option handles inbox organization and batching, AI’s practical usefulness (summaries vs writing), multi-account and cross-device reliability, collaboration and shared-inbox needs, integrations (like calendar and existing Gmail/Outlook workflows), overall usability and onboarding, and whether pricing and deployment (SaaS vs self-hosted) fit different budgets and security constraints.

Shortwave

Intelligent email, powered by AI — Smarter & faster email designed for stress-free productivity

4.7 · 23 reviews

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Shortwave is built around the idea that inbox control comes from better organization, not just faster shortcuts. Instead of optimizing purely for speed like Superhuman, it emphasizes GTD-style processing with bundles that group related mail so it’s easier to understand what matters at a glance.

A major differentiator is batching: you can schedule when certain categories arrive, which reduces constant interruptions and supports more intentional email sessions. This approach can feel calmer than relying on split inboxes, reminders, and constant triage.

AI is integrated as lightweight, practical UI actions, especially for summarizing long threads and quickly catching up. That makes it a strong fit for people who want to read less and decide faster, without turning email into a chatbot experience.

It’s also a compelling pick when value matters, delivering a modern, responsive client that still feels power-user friendly while leaning harder into decluttering and focus than Superhuman’s “inbox sprint” philosophy.

Best for

Best for Gmail power users who want calmer triage through bundles, batching, and fast summaries.

Standout features

✓Bundles for automatic email grouping
✓Scheduled delivery to batch incoming categories
✓One-click AI thread summaries
✓Fast, keyboard-friendly email processing
✓Auto-unsubscribe and declutter tools

Spark

All in one email solution.

4.1 · 70 reviews

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Spark stands out when email complexity comes from juggling many inboxes, not just high volume in one. Where Superhuman shines as a premium power-user client, Spark focuses on making multi-account setup and cross-device continuity feel effortless.

Its smart inbox grouping keeps newsletters, notifications, and priority conversations separated, helping reduce noise without demanding a rigid workflow. For many, this is a more “set it and forget it” approach than keyboard-driven triage.

Gatekeeper-style sender approval adds another layer of control by filtering new senders before they hit the inbox. That makes it particularly useful for people whose main pain is inbound clutter rather than response speed.

Spark also offers team-oriented capabilities and everyday conveniences like snoozing and “done” triage, making it a practical alternative when productivity means staying organized across devices and accounts, not necessarily moving faster through each message.

Best for

Ideal for people managing many email accounts who want smart sorting and consistent cross-device workflows.

Standout features

✓Multi-account sync across devices
✓Smart inbox categories and grouping
✓Gatekeeper sender approval and blocking
✓Snooze and mark-done triage flow
✓Team collaboration features

Missive

Email, Chat and Tasks for Productive Teams

4.6 · 11 reviews

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Missive takes email beyond a personal productivity tool and turns it into a shared workspace for teams. If Superhuman is optimized for individual speed, Missive is optimized for coordination: discussions, decisions, and accountability happen right alongside the email thread.

Shared inbox workflows are the core advantage, with assignments, internal chat, and structured handling that reduces forwarding and scattered context. That makes it especially strong for support, operations, and customer-facing teams that live in email all day.

Missive also earns its place as a “helpdesk-lite” alternative, replacing heavier systems for teams that primarily need shared visibility and clear ownership. Rules and IMAP-based flexibility help it fit existing setups without forcing a total rethinking of email.

The experience is highly customizable and polished, which matters when multiple teammates need a consistent, reliable system. Choose it when the biggest bottleneck isn’t typing faster, but getting the right person to handle the right message at the right time.

Best for

Best for teams that need shared inbox collaboration, assignments, and internal discussion on threads.

Standout features

✓Shared inboxes with assignments
✓Internal chat and comments in threads
✓Rules and automations for routing
✓Team accountability and escalation workflows
✓Cross-platform apps with customization

MailMaestro

Your AI email copilot for Gmail and Outlook.

5.0 · 6 reviews

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MailMaestro is the alternative for people who don’t want a new email client at all. Rather than replacing Gmail or Outlook like Superhuman does, it acts as an AI copilot inside the inbox you already use.

The biggest win is removing context switching: drafting, rewriting, and polishing replies happens where the email lives, instead of bouncing between a separate AI tool and your mail app. That’s especially valuable in Outlook-heavy environments where adopting a dedicated client can be a non-starter.

It’s also a strong choice when the main constraint is writing time, not inbox speed. Multilingual support helps produce professional messages across languages, which can be more impactful than keyboard shortcuts for globally distributed teams.

For high-volume threads, summarization and action-item extraction can speed up comprehension and follow-through. Pick MailMaestro when you like your current mail workflow but want AI to make writing and catching up dramatically faster.

Best for

Ideal for Gmail or Outlook users who want AI drafting and summaries without switching clients.

Standout features

✓Works inside Gmail and Outlook
✓AI drafting and reply rewriting
✓Multilingual email writing support
✓Thread summaries and action items
✓Reduces ChatGPT-to-inbox switching

Inbox Zero

Clean up your inbox in minutes. Open source.

4.8 · 14 reviews

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Inbox Zero is purpose-built for reclaiming an overloaded inbox fast, especially when newsletters and recurring senders have piled up for years. Compared with Superhuman’s day-to-day speed advantages, it prioritizes bulk cleanup and decluttering as the primary job.

The workflow is centered on unsubscribe management and sender-based review, making it easy to audit who’s filling up the inbox and take action in batches. That’s ideal for a “reset” moment when normal triage tools aren’t enough.

A key differentiator is the open-source, self-hostable posture, which appeals to people who want more control over privacy and deployment than a premium hosted client. It’s a fundamentally different value proposition than paying for a high-end, proprietary email experience.

Inbox Zero also fits users who want a dedicated cold-email and noise blocking layer. Choose it when the goal is cleaning house quickly and keeping future clutter out, rather than optimizing every keystroke of daily correspondence.