Superhuman Mail vs Shortwave

Pick up to 4 tools and see their free plans, entry prices, platforms and limits in one table. Every fact comes from each vendor's own pages, checked 16 October 2026.

Written head to head: Superhuman Mail vs Shortwave, with when to choose each side.

Compared on	Superhuman Mail From $25/member/mo Visit Remove	Shortwave Free plan · from $18/seat/mo Visit Remove
What it is	AI email app for teams that use Gmail or Outlook	AI email client for Gmail and Google Workspace accounts
Free plan	No	Basic AI with a limited usage quota; 90 days of standard and AI search history; up to 15 threads per AI search; basic inbox settings; adds a 'Sent with Shortwave' email signature.
Cheapest paid plan	$25/member/mo billed annually (Starter)Superhuman Mail pricing	$18/seat/mo (Pro)Shortwave pricing
What it covers	Mail is also included in the Superhuman suite Business plan ($40 monthly, or $33 per member/month billed annually), which bundles Mail, Grammarly, Docs and Go.	Listed as $18 per seat/month on the Individual tab; the pricing page shows no annual billing option.
Free trial	None stated	14-day free trial of paid plans
Platforms	macOS, Chrome extension	Web, macOS, Windows, iOS, Android
Integrations (vendor's figure)	Not stated	Not stated
Open source	No	No
Good for	Working through a heavy Gmail or Outlook inbox faster Drafting routine replies with AI Sales teams viewing CRM records next to email	Finding old emails and attachments by asking questions in plain English Sorting a busy Gmail inbox automatically with AI filters Sharing and assigning customer email threads within a small team
Watch out for	No free plan for Mail; the Superhuman suite's Free and Pro plans do not include Mail Built for Gmail and Outlook users; other email providers are not mentioned on the product page Auto Drafts, Ask AI and CRM integrations require the Business plan	Sign-in requires Gmail or Google Workspace; Microsoft 365 and Exchange are not supported, and other providers work only through forwarding Free plan limits search history to 90 days and adds a 'Sent with Shortwave' signature Each plan has a daily AI usage quota; higher tiers give more usage
Made by	Superhuman (formerly Grammarly)	Shortwave Communications, Inc.

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

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