The best Superhuman alternatives depends on one thing before anything else: which email provider you use. Shortwave only works with Gmail. Hey requires its own address. Spark, Missive and SaneBox work with Gmail, Outlook and standard IMAP accounts. That single filter removes half the options before you compare a feature.
For most people, Spark is the safest switch, Shortwave is the closest match on a Gmail account, and Missive is the answer if you need a shared team inbox. And if you are mainly searching because of the price, check what Superhuman actually costs first, because the published figures disagree.
First, “Superhuman” Now Means Two Things
Grammarly acquired the Superhuman email client in July 2025. Then, in October 2025, Grammarly renamed the entire company Superhuman.
So the word now covers a parent company that owns Grammarly, Coda and a newer AI assistant called Superhuman Go, and it also covers the email app, which was renamed Superhuman Mail to keep the two apart. The company acquired AI spreadsheet maker Rows in February 2026 as well, folding it into Coda.
This matters when you search. Pages about “Superhuman pricing” may be quoting the suite, the email app, or both. If what you want is the fast email client, you are looking for Superhuman Mail.
What Superhuman Mail Actually Costs
Sources contradict each other here, and the contradiction is worth untangling before you decide it is too expensive.
One set of reports says Superhuman Mail is now only available inside a Business tier at $33 per user per month billed annually, or $40 month to month, bundled with Grammarly, Coda and Superhuman Go, and that the old standalone plan is gone for new users. Several of those reports describe this as a price increase caused by the acquisition.
Another set describes two tiers for the email app at Superhuman’s pricing page: $25 a month billed annually, which is $300 paid upfront, or $30 month to month, plus the $33 and $40 Business tier with the more advanced AI. One comparison notes those $25 and $33 figures were set in an August 2024 restructure, a year before the acquisition, and have not moved since.
Worth noticing who says what. Most of the sources calling it a post-acquisition price hike are competing email tools. The neutral pricing trackers describe the $25 and $33 structure as dating from 2024, with the acquisition changing the packaging rather than the seat price.
The practical answer: budget $30 to $40 a month per person, and check the live pricing page on the signup path you actually use. There is no permanent free plan for the email app, and at least one source reports the trial requires a card.
Start With Your Email Provider
| Tool | Gmail | Outlook | Other IMAP |
|---|---|---|---|
| Superhuman Mail | Yes | Yes | No |
| Shortwave | Yes | No | No |
| Spark | Yes | Yes | Yes |
| Missive | Yes | Yes | Yes |
| SaneBox | Yes | Yes | Yes |
| Hey | Requires a hey.com address or a custom domain through Hey | ||
If you are on Outlook or Exchange, Shortwave and Hey are out before you look at anything else. If you want to keep your existing address and your existing app, SaneBox is the only option on this list that does not ask you to switch clients at all.
The Superhuman Alternatives, by What You’re Replacing
The speed, on a Gmail account: Shortwave
Shortwave is the closest direct competitor, built by engineers who previously worked on Google Inbox. It pairs a fast interface with AI search you can ask plain questions of, thread summaries, a writing assistant that learns your voice, and plain-English filtering rules. Its Tasklets automation connects your inbox to Slack, Notion, Asana and HubSpot.
It has a free tier. Paid pricing gets quoted inconsistently, and one comparison explains why: Shortwave’s pricing page opens on the Business tab, so some lists quote individual plans in the teens per month while others quote business plans from roughly $24 a user annually. Check which track you are on.
The trade-off is density. Shortwave swaps Superhuman’s minimalism for more information on screen, which some people prefer and others find crowded.
Cross-platform and free: Spark
Spark from Readdle runs on Mac, Windows, iOS, Android and the web, and its free tier is genuinely usable rather than a demo. Paid plans run $10 a month for Plus and $20 for Pro, or roughly $8.25 and $16.58 on annual billing. It includes AI writing, a smart inbox, and shared drafts for teams.
For most people leaving Superhuman over price, this is where to start.
A shared team inbox: Missive or Front
Superhuman and Shortwave are built for individual productivity. Neither is a real team tool. Missive is purpose-built for shared inboxes, assignments and collaborating on drafts in real time, with AI rules running in the background. Front covers the same ground at the customer-facing end.
No switching at all: SaneBox
SaneBox works behind whatever email app you already use, filtering low-priority mail out of your inbox automatically. From around $7 a month. It does not make email faster to process. It makes there be less of it.
An opinionated reset: Hey
Hey forces deliberate habits: you screen new senders before they reach you, and it separates newsletters and receipts from real mail. The catch is the address requirement, and there is no free tier.
You live in Notion: Notion Mail
Free to use, with AI features that can reference your Notion pages when drafting. The AI needs a Notion AI subscription, around $8 to $10 per user per month.
Or just stay put
Gmail with keyboard shortcuts switched on is free and faster than most people realise. Apple users have Apple Mail and Mimestream, a native Mac client for Gmail. The built-in AI in both Gmail and Outlook now handles drafting and summaries that used to justify a dedicated app.
Triage and Automation Are Different Problems
One distinction worth holding onto while you compare.
Shortwave and Superhuman use AI to make reading and processing email faster: smarter sorting, quicker triage, less time in the inbox. That is triage. Other tools aim to act on email without you, drafting replies before you open anything or handling follow-ups automatically. That is automation.
Superhuman’s own comparison page makes this case against Shortwave, arguing its AI works in the background with automatic reminders and drafts, while Shortwave’s assistant waits until you ask. Treat that as a vendor making its argument, but the distinction itself is real. Decide which problem you have before you pick a tool built for the other one.
If what you actually want is software that handles administrative work on your behalf rather than a faster inbox, our look at AI productivity tools for executives covers that broader category.
Is Superhuman Still Worth It?
For some people, yes. One independent guide puts the threshold at roughly 100 emails a day, which is a reasonable rule of thumb even if it is one editor’s judgement rather than a measurement. Below that, the speed advantage rarely pays for itself.
The Business tier also bundles CRM integrations with HubSpot, Salesforce and Pipedrive alongside Grammarly and Coda. If your team would pay for those separately anyway, the bundle maths changes.
And if you are an existing user on an older plan, check whether you are grandfathered before cancelling. Some long-term users report keeping their original rate, and switching away means losing it.
A Note on Privacy
Most of these clients cache your mail on their own servers to make search and loading fast, and their AI features process your message content to draft and summarise. Superhuman and Spark both work this way.
That is standard for the category and not a reason to avoid any of them. It is a reason to read the privacy terms before connecting a work account, particularly if your organisation has rules about where email content can be processed. Privacy-focused options exist if that is your constraint.
Frequently Asked Questions
What is the cheapest Superhuman alternatives?
Gmail or Outlook with keyboard shortcuts, both free. For a dedicated client, Spark’s free tier is the most complete no-cost option and works with any provider.
Is Superhuman the same company as Grammarly?
Yes. Grammarly bought Superhuman in July 2025 and renamed itself Superhuman in October 2025. The email app is now called Superhuman Mail.
Does Shortwave work with Outlook?
No. Shortwave supports Gmail and Google Workspace only. Outlook users should look at Spark, Missive or SaneBox.
The Practical Call
Check your provider, then decide what you are replacing. On Gmail and wanting Superhuman’s feel for less, try Shortwave. On anything and wanting a solid free client, try Spark. Running a shared inbox, try Missive. Wanting less email rather than faster email, try SaneBox.
And before cancelling Superhuman over price, confirm what you are actually paying and whether you are on a grandfathered rate. The published numbers conflict, and a surprising amount of the “Superhuman got more expensive” coverage comes from companies selling the alternative. For the wider productivity stack around email, our guide to AI productivity tools for managers covers what pairs well.
