Superhuman vs Shortwave (2026): Which Should You Pick?

Pick Superhuman if you want the fastest email client on the market and you need Outlook support. Pick Shortwave if you're on Gmail, want the smartest AI search and drafting, and would rather not pay $30–$40 a month. They're the two best AI-native email clients in 2026, and the choice comes down to speed versus intelligence — and which mailbox you use.

Quick verdict

Superhuman is a speed machine with AI bolted on; Shortwave is an AI engine wearing an email client. Both draft well. Superhuman is faster and works with Outlook; Shortwave has a sharper natural-language search and costs less. If platform decides it for you — Outlook forces Superhuman, tight budget favors Shortwave — the rest is preference.

Side by side

	Superhuman	Shortwave
Type	Native AI client	Native AI client
Works with	Gmail + Outlook / M365	Gmail only
Standout	Speed, Split Inbox, 100+ shortcuts	Natural-language AI Search
AI drafting	Auto Drafts (Business tier)	Included on paid plans
Calendar	Yes (Instant Event)	No (email-only)
Starts at	$30/mo ($40 for AI)	$14/mo
Free plan	No (trial)	No (14-day trial)

Superhuman

Superhuman's whole design is about removing friction. Over 100 keyboard shortcuts, an instant interface, and the excellent Split Inbox (streams for VIPs, team, calendars, newsletters) mean heavy users report saving around 4 hours a week. It works with both Gmail and Outlook, and in 2026 its Auto Drafts AI finally matches the interface — writing replies in your voice via Anthropic and OpenAI models.

The trade-offs: it's the pricier tool, the AI is gated behind the $40/month Business tier, and it's still fundamentally assistive — you read and decide on every message. See our Superhuman review for the deep dive.

Shortwave

Shortwave rebuilt Gmail around AI, and its AI Search is the best in the category — ask "the email where the investor mentioned the cap table" and it finds the thread on the first try. It also drafts replies, summarizes threads, and bundles conversations into a clean priority inbox. Individual Pro starts around $14/month, with Business at $30/user/month ($24 annual).

The limits are real: Shortwave is Gmail-only with no Outlook support, and it has no calendar, so scheduling still needs a separate tool. For a Gmail user who values AI over raw keystroke speed, though, it's the smarter buy.

AI head-to-head

On drafting, it's close. Both learn your tone and produce sendable replies for routine mail; Superhuman publishes strong numbers (60% of auto-drafts sent unedited) and Shortwave's drafts are comparably natural. On search and retrieval, Shortwave wins — its conversational search understands intent better and pulls the right thread faster. On inbox structure, Superhuman's Split Inbox is the more refined triage system.

Net: Shortwave is the better "ask my inbox anything" tool; Superhuman is the better "get through my inbox fast" tool.

Pricing

Shortwave is clearly cheaper. Pro is around $14/month, and even its $30 Business tier undercuts Superhuman's $40 Business. Superhuman's Starter is $30/month but doesn't include the modern AI, so a real comparison is Shortwave Pro at $14 versus Superhuman Business at $40. Neither has a permanent free plan — both offer trials. For the full Superhuman breakdown, see our Superhuman pricing guide.

Which should you pick?

Pick Superhuman if you use Outlook, you process a very high volume of email, or raw speed and a keyboard-first workflow are what you're paying for. It's the premium choice and it earns the premium for the right user.

Pick Shortwave if you're on Gmail, you want the best AI search and solid drafting, and you'd rather spend $14 than $40. For most individual Gmail users, it's the better value.

Still deciding? Compare both against the rest of the field in our best AI email assistants guide.