Power users who live in their inbox tend to gravitate to one of three tools: Superhuman, famous for speed and keyboard-driven triage; Spark, an AI-forward client built to run everywhere; or Outlook, the default for anyone already paying for Microsoft 365. We checked current pricing on each vendor’s own site, including Superhuman’s official help-center pricing article, to see what you actually get for the money in 2026.
At a Glance
| Tool | Starting Price | AI Features | Best For |
|---|---|---|---|
| Superhuman | $30/mo (Starter) | Superhuman AI triage; Business adds Auto Drafts, Ask AI | High-volume email power users on Mac/mobile |
| Spark | $0/mo (Free), $10/mo (Plus) | Spark+AI assistant, AI Meeting Notes, Autopilot (Pro) | AI-assisted email across every platform, including Windows |
| Outlook (via Microsoft 365) | $9.99/mo (Personal, includes Copilot) | Copilot chat and drafting built into the subscription | Microsoft 365 households and power users needing full platform coverage |
Short Verdict
Superhuman is the best pick for dedicated email power users on Mac and mobile who want the fastest, most opinionated inbox-zero workflow and can justify its premium price. Outlook via Microsoft 365 is the practical default for anyone who needs a true Windows app and already pays for the Microsoft ecosystem. Spark is the best middle ground — solid AI features at a fraction of Superhuman’s cost, on every platform.
What They Are
Superhuman
Superhuman is a premium email client layered on top of Gmail or Outlook accounts, built around speed: instant load times, exhaustive keyboard shortcuts, and AI features for triage and drafting. It has native apps for Mac, iPhone, and Android, plus a Chrome extension for desktop browsers — but no dedicated native Windows app.
Spark
Spark Mail (by Readdle) is an AI-assisted email client designed to work consistently across Mac, Windows, iOS, and Android. Its Spark+AI features — summarization, AI Assistant, AI Meeting Notes, and (on Pro) Autopilot and Auto-Drafts — are available on Plus, Pro, and Premium tiers.
Outlook
Outlook is Microsoft’s email client, bundled into Microsoft 365 subscriptions alongside Word, Excel, and now Copilot AI. It runs natively on Windows, Mac, iOS, Android, and the web, making it the most platform-complete option of the three, and a free, more limited version is also available through Outlook.com.
Pricing Breakdown
| Tool / Plan | Price | Notes |
|---|---|---|
| Superhuman — Starter | $30/mo or $300/yr ($25/mo equivalent) | Most Superhuman AI features |
| Superhuman — Business | $40/mo or $396/yr ($33/mo equivalent) | Adds Auto Drafts, Ask AI, Custom Auto Labels, CRM integrations |
| Superhuman — Enterprise | Custom (contact sales) | Adds SSO, advanced security, dedicated support |
| Spark — Free | $0/mo | Limited AI preview, 5 lifetime AI Meeting Notes |
| Spark — Plus | $10/mo or $8.25/mo annual ($99/yr) | 40 AI Meeting Notes/month, AI Assistant |
| Spark — Pro | $20/mo or $16.58/mo annual ($199/yr) | Unlimited AI Meeting Notes, Autopilot, Auto-Drafts |
| Outlook — Free (Outlook.com) | $0/mo | Basic Outlook, limited/no Copilot |
| Outlook — Microsoft 365 Personal | $9.99/mo or $99.99/yr | Full desktop Outlook + Copilot included, 1 person |
| Outlook — Microsoft 365 Family | $12.99/mo or $129.99/yr | Same as Personal; Copilot usage limited to the subscription owner |
Pros and Cons
Superhuman
- Fastest, most refined keyboard-driven workflow of the three
- AI triage and drafting feel purpose-built for high email volume
- Works on top of existing Gmail/Outlook accounts
- By far the most expensive option ($30-40/month per person)
- No native Windows app — desktop access is via a Chrome extension
- No free plan to try before buying
Spark
- True cross-platform support, including Windows
- Usable free tier, with paid AI starting at $10/month
- AI Meeting Notes and Autopilot are distinctive, practical features
- Less polished/fast than Superhuman for pure speed-focused workflows
- Full AI feature set requires Pro ($20/month) for unlimited use
- Team pricing is handled on a separate page, less transparent upfront
Outlook
- Broadest platform support: Windows, Mac, iOS, Android, web
- Copilot AI included in the Microsoft 365 price, not a separate add-on
- Best value if you already pay for Microsoft 365 for Word/Excel/Teams
- Not purpose-built for inbox-zero speed the way Superhuman is
- Copilot usage limits apply even on paid plans
- Family plan AI features are restricted to the subscription owner only
Who It’s a Good Fit For / Who Should Look Elsewhere
Superhuman fits Mac- and mobile-based professionals processing huge email volumes who treat inbox speed as a competitive advantage. Look elsewhere if you need a native Windows app or are price-sensitive.
Spark fits individuals and small teams who want solid AI email features on whatever device they use, including Windows, without Superhuman’s price tag. Look elsewhere if raw speed and the most refined power-user shortcuts are your top priority.
Outlook fits anyone already in the Microsoft 365 ecosystem, or who needs guaranteed parity across every device including Windows. Look elsewhere if you want an email client built from scratch around speed rather than a general productivity suite.
Bottom Line
Pick Superhuman if you’ll genuinely use its speed and can accept Mac/mobile-first limitations and a premium price. Pick Outlook if you’re already paying for Microsoft 365 and need full platform coverage. Pick Spark if you want meaningful AI assistance across every device at a fraction of Superhuman’s cost.
FAQ
Does Superhuman have a Windows app?
Not a native one. Superhuman’s official download page lists apps for Mac, iPhone/iPad, and Android, plus a Chrome extension for desktop browsers — but no standalone Windows application.
Is Copilot included with Outlook, or is it a separate cost?
Copilot is bundled into Microsoft 365 Personal ($9.99/month) and Family ($12.99/month) plans at no extra charge, per Microsoft’s official pricing page, though usage limits apply.
Does Spark have a free plan?
Yes. Spark’s Free plan includes a limited preview of its AI features and 5 lifetime AI Meeting Notes; full AI access starts on the Plus plan at $10/month.
Is Superhuman worth the price over Gmail or Outlook alone?
It depends on email volume. For people processing dozens to hundreds of emails a day, the speed and AI triage can pay for themselves in time saved; casual users are unlikely to need a $30-40/month add-on layer.
Can I use Superhuman or Spark with my existing Gmail or Outlook account?
Yes, both are designed to connect to existing Gmail, Google Workspace, Outlook, or Microsoft 365 mailboxes rather than replacing your email provider.
Sources
- Superhuman official pricing help article — Starter/Business/Enterprise pricing and AI feature differences
- Superhuman download help article — confirms Mac, iOS, Android, and Chrome extension availability (no native Windows app)
- Spark Mail pricing page — Free/Plus/Pro/Enterprise pricing and AI features
- Microsoft 365 plan comparison page — Personal/Family pricing confirming Copilot is included with Outlook
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