Superhuman Alternatives (2026): 10 Email Apps and AI Assistants, Compared on Price and Platform

Short answer: if you want Superhuman-style speed and AI drafts for less, Spark has a free plan, and its Pro plan with Auto-Drafts is $199 a year. If you use Gmail and want the most AI, Shortwave is a full email app from $30 a seat that names the Claude models it runs on. If you want to keep Gmail or Outlook and just get replies drafted, Fyxer, Jace or open-source Inbox Zero work inside the inbox you already have. For a team inbox, Missive starts at $14 a user. For the lowest price with apps on every platform, Canary Mail is $36 a year. Updated November 9, 2026.

How we checked: plans, prices and features come from each vendor's own pricing, product, about or help page, read November 9, 2026. Where a page does not state something, we say "Not stated". We did not test these apps hands-on, so this guide compares published price, platforms and features, not speed or draft quality.

Superhuman is no longer just the fast email app. Grammarly's about page says it acquired Coda and Superhuman Mail in 2025, and that "in October, our company became Superhuman". Superhuman's own about page now describes one suite: Superhuman Mail (the original email app), Grammarly, Superhuman Docs (formerly Coda) and Superhuman Go, an AI assistant that works across apps. So "Superhuman AI" can mean several products. For email there are two:

• Email Assistant works inside your existing Gmail or Outlook. It labels mail as it arrives, drafts a reply to every message that needs one, archives low-priority mail and brings back threads that need a follow-up. Its page says it learns how you write from your sent mail, adapts to each recipient, and never sends without your approval. It is included in Superhuman Pro, $12 a member a month on annual billing or $15 monthly, per the suite plans page.
• Superhuman Mail is the separate email app, for Gmail or Outlook accounts. The suite's Business plan is $33 a member a month on annual billing or $40 monthly and adds Mail. The Mail plans page also lists a Mail Starter plan at $25 a member a month on annual billing; Auto Drafts, Ask AI and the Mail MCP server need Business. Both Mail plans are capped at 25 seats; beyond that is Enterprise.

Superhuman's suite plans page lists model training as "Opt out" on Free, Pro and Business, and "Off by default" only on Enterprise. The Email Assistant page says your email is never used to train external AI models and lists SOC 2 Type 2 and GDPR. Superhuman offers a Windows download and an Android app on Google Play. See our Superhuman listing.

• Price. The Mail app is $25 to $40 a seat a month depending on plan and billing, and AI drafting in the app needs Business. A free or $10 email app is a big saving for one person, and a large saving for a team.
• Account support. Superhuman Mail is built for Gmail and Outlook accounts. If you use iCloud, Yahoo or another IMAP provider, apps like Spark, Canary and Missive connect more kinds of accounts.
• AI and data. Some buyers want more autonomy (rules that can send replies), some want to choose the AI model or bring their own API key, and some want model training off by default without buying Enterprise.
• Not wanting to switch apps. The Email Assistant already covers this inside Gmail and Outlook, so the real comparison is with other overlay assistants such as Fyxer, Jace and Inbox Zero.

The cheapest alternative may already be on your bill. Google's Workspace pricing lists "Gemini AI assistant in Gmail" on Business Starter at $7 a user a month, with 14 days at no cost; for a personal Gmail account, Google AI Plus at $4.99 a month adds Gemini in Gmail. Copilot comes with Microsoft 365 Personal at $9.99 a month or $99.99 a year, which includes the Outlook desktop app with Copilot.

Not for: anyone who wants every reply drafted before they open the thread. Superhuman's own comparison describes Gemini and Copilot as handling individual tasks when you prompt them, and on the pages we read neither describes background auto-drafting.

Shortwave is the closest match to Superhuman Mail for Gmail users: a separate email app with a heavy AI layer. Its pricing page lists Business at $30 a seat a month, Premier at $45 and Max at $120, each with a 14-day trial, and names its Claude models by plan tier. Paid plans learn from the emails you send and offer AI replies, autocomplete, summaries and AI search; for automatic drafting it points to its sister product, Tasklet.

Not for: Outlook users. Shortwave's docs say Microsoft 365 and Exchange are not supported.

Spark is a cross-platform email client for Mac, iOS, Windows and Android. Its pricing page lists a Free plan with a smart inbox and unlimited email accounts; Plus at $10 a user a month or $99 a year, which adds Spark +AI; and Pro at $20 a month or $199 a year, which adds Autopilot rules, Auto-Drafts "written in your voice", read statuses and a HubSpot integration. Plus and Pro have a 7-day trial.

Spark +AI is off by default and runs on a monthly quota; when it is used up you buy an add-on or wait for the refill. Not for: heavy AI users who need a stated allowance, since the page describes the quota only as Extended or High.

Fyxer is the best-known alternative to Superhuman's Email Assistant. It works inside Gmail and Outlook, sorts incoming mail and drafts replies in your tone. Its pricing page puts drafting on Pro at $37 a person a month on annual billing or $49 monthly, with a 14-day trial; the Free plan has a daily briefing but no drafted replies. It also includes a meeting notetaker.

Not for: saving money against Superhuman. Superhuman's Email Assistant does the same core job for $12 a month on annual billing. Fyxer makes sense if you want its meeting notes or its list of security certifications; our AI email assistant comparison covers those.

Jace connects Gmail, Google Workspace, Outlook.com and Microsoft 365 accounts, drafts replies to your Drafts folder and runs Flows such as creating calendar events. Its pricing page lists Plus at $25 a month or $20 on annual billing for 10,000 credits, and Pro from $50 ($40 annual) for 20,000 credits, with higher tiers up to 2,400,000 credits. There is a 7-day trial.

Not for: a busy inbox on a fixed budget. Drafting uses credits, and when they run out auto-drafts pause until the next month.

Inbox Zero is an open-source assistant for Gmail and Outlook under the AGPL-3.0 license, and you can self-host it. Its pricing page lists Starter at $20 a user a month on annual billing ($25 monthly) with 2 email accounts, Plus at $28 ($35) and Professional at $40 ($50), each with a 7-day trial. Its email app for Gmail and Outlook is free on web, desktop and iPhone.

It is the one alternative here whose plain-English rules can send replies on their own, and you can bring your own AI provider key. Not for: anyone who does not want to test rules before trusting them.

Missive is a team inbox: shared and personal accounts, internal comments, assignments and rules, across email, SMS, WhatsApp and social messages. Its pricing page lists Starter at $14, Productive at $24 and Business at $36 per user a month on yearly billing, and every new team gets a 30-day trial of Productive with no card. It connects Gmail and Google Workspace, Outlook and IMAP, and runs on the web, iOS, Android, macOS and Windows.

Its AI drafts and AI rules can use Missive's own AI credits or your own key for Anthropic, OpenAI or Gemini; the plan table shows the AI rows on two of its three plans, which we read as Productive and Business. Not for: one person who wants a fast personal inbox. Starter is capped at 5 users, and the collaboration features are the point.

Notion Mail is Notion's email app, but its standalone product page now redirects to Notion's main product page, and Notion does not state a price for it on the pages we could read. The live help guide shows where Notion has taken email: Custom Agents that connect to Gmail, iCloud, Notion Mail or Outlook, sort and label mail, draft replies "for your review" and turn emails into database entries. Notion's pricing page lists Custom Agents as free to try, then $10 per 1,000 monthly Notion credits, and the Business plan, which includes Notion Agent, at $20 a member a month.

Not for: anyone who wants a dedicated, documented email client today. The product's own pages are thin, and the email features we could confirm run through Notion's agents.

Canary Mail is a cross-platform client for Mac, Windows, iOS and Android. Its pricing page lists a Free plan with unlimited mail accounts on up to 2 devices; Growth at $36 a year, which adds AI Copilot for prioritizing, writing and summarizing, read receipts and send later; and Pro+ at $100 a year, which adds PGP encryption, HIPAA-oriented SecureSend and phishing and impersonation detection. Both paid plans are also sold as one-time lifetime licenses. There is no monthly billing, and the 7-day trial needs no card and drops to Free when it ends.

Not for: teams. Every Canary license is for a single user, and the page does not describe automatic drafting in the background.

• You like Superhuman but not the price: Spark Pro at $199 a year has Auto-Drafts; Canary Mail at $36 a year if you mainly want a fast client with some AI.
• You use Gmail and want the most AI in a new app: Shortwave.
• You do not want to switch apps: Superhuman's own Email Assistant at $12 a month is hard to undercut; Fyxer, Jace and Inbox Zero are the alternatives.
• You want open source or your own AI key: Inbox Zero, or Missive for a team.
• You share an inbox with a team: Missive.
• You only want help writing now and then: Gemini in Gmail or Copilot in Outlook, or a free chatbot (see our AI email writer guide).

Before you leave Superhuman, check which plan you are on. If you pay $33 or more for the Mail app but mostly use the drafts, the $12 Email Assistant inside your normal Gmail or Outlook may be the cheaper switch. For a deeper look at drafting assistants, see our AI email assistant comparison.

Is Superhuman owned by Grammarly?

Yes, in effect. Grammarly's about page says it acquired Coda and Superhuman Mail in 2025, and that in October the company itself became Superhuman. The suite now includes Superhuman Mail, Grammarly, Superhuman Docs (formerly Coda) and the Superhuman Go assistant.

How much does Superhuman cost?

On Superhuman's plans page, Pro is $12 a member a month on annual billing ($15 monthly) and includes the Email Assistant for Gmail and Outlook. Business, which adds the Superhuman Mail app, is $33 annual or $40 monthly. A Mail-only Starter plan is listed at $25 a member a month on annual billing. Enterprise is custom.

What is the best free alternative to Superhuman?

Spark and Canary Mail both have free plans with unlimited email accounts; their AI features are paid (Spark from $99 a year, Canary $36 a year). Inbox Zero is open source and free to self-host, and its email app is free on web, desktop and iPhone.

Is there a Superhuman alternative for Outlook?

Yes. Fyxer, Jace and Inbox Zero draft replies inside Outlook, Missive and Spark connect Outlook accounts in their own apps, and Copilot comes with Microsoft 365 Personal at $9.99 a month. Shortwave does not support Microsoft 365 or Exchange.

Does Superhuman train AI on my email?

Superhuman's Email Assistant page says your email is never used to train external AI models. Its suite plans page lists model training as opt-out on Free, Pro and Business, and off by default only on Enterprise.

Which Superhuman alternative has AI auto-drafts?

Spark has Auto-Drafts on its Pro plan ($199 a year). Fyxer drafts replies on Pro ($37 a month annual), Jace on any paid plan using credits, and Inbox Zero on its hosted plans from $20 a user a month annual. Missive lists instant AI drafts, and Notion's Custom Agents can draft replies for review.