Shortwave vs Superhuman Mail

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	Shortwave Free plan · from $18/seat/mo Visit Remove	Superhuman Mail From $25/member/mo Visit Remove
What it is	AI email client for Gmail and Google Workspace accounts	AI email app for teams that use Gmail or Outlook
Free plan	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.	No
Cheapest paid plan	$18/seat/mo (Pro)Shortwave pricing	$25/member/mo billed annually (Starter)Superhuman Mail pricing
What it covers	Listed as $18 per seat/month on the Individual tab; the pricing page shows no annual billing option.	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.
Free trial	14-day free trial of paid plans	None stated
Platforms	Web, macOS, Windows, iOS, Android	macOS, Chrome extension
Integrations (vendor's figure)	Not stated	Not stated
Open source	No	No
Good for	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	Working through a heavy Gmail or Outlook inbox faster Drafting routine replies with AI Sales teams viewing CRM records next to email
Watch out for	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	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
Made by	Shortwave Communications, Inc.	Superhuman (formerly Grammarly)

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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