Superhuman vs HEY for Solo Founders: Two Opposite Philosophies

Superhuman vs HEY for solo founders is not really a comparison of two email apps. It is a comparison of two different things wearing the same category label.

Superhuman Mail is a client. It sits on top of the Gmail or Outlook account you already have and makes that account faster. HEY is a provider. It gives you a mailbox, an address, a calendar and a set of opinions about how mail should behave, and it replaces the account you have.

That single structural difference decides the purchase for almost every solo founder, and most comparison pages bury it under feature checklists. So we will start there.

The verdict up front#

If your current email address is load-bearing — it is on your invoices, your Stripe account, your domain registrar, your investor updates and four years of threads you still search — Superhuman is the better choice. Not because its AI is better than HEY's screening, but because it costs you nothing to try and nothing to leave. You point it at the account you already have. If you cancel, your mail is exactly where it was.

HEY is the better choice in a narrower case, and it is a real one: you are deliberately starting a clean personal or founder address, and you want a system that decides what reaches you rather than a system that sorts what already arrived. HEY's Screener does something no AI triage does, which we will be specific about below.

The honest framing: Superhuman asks you to change your workflow, HEY asks you to change your address. For a solo founder the second is a much larger bill, paid once, up front, and not partially refundable.

Superhuman vs HEY at a glance#

Everything in this table was checked against each vendor's own live pages in September 2026. Product pages change; verify anything that matters to you on the vendor's site before you buy.

First, which Superhuman are we talking about?#

This needs saying because it now confuses buyers. Grammarly acquired Superhuman, the email client, in July 2025, and in October 2025 renamed the parent company to Superhuman. Two different things now carry the name: Superhuman Mail, the email client, and the broader Superhuman suite the parent company sells.

Everything in this post is about Superhuman Mail. If a review you read describes Superhuman as an independent startup, it was written before the acquisition and its conclusions about roadmap, pricing or company direction are out of date.

Where Superhuman wins#

The first win is the one that matters most and gets discussed least: zero migration. You connect the Gmail or Outlook account you already use. Your address does not change, your contacts do not need telling, your old threads stay searchable, and your signup-recovery emails keep arriving at the address every service already has on file.

The second is the keyboard model. Superhuman is built around command-driven navigation rather than pointing at things, and the company's own marketing leans on time saved and typing speed. Those are vendor claims rather than measurements you should take on faith, but the design intent is real and it is the thing long-time users rate highest.

The third is AI that produces output rather than only sorting. Auto Drafts writes replies in advance, so the inbox you open already has answers waiting. Split Inbox separates teammates, VIPs and tool notifications into their own streams. Auto Labels categorises by priority and context without you touching each message, and Auto Archive clears marketing, cold pitches and social updates.

The fourth is founder-specific instrumentation. Read statuses show when someone opened your mail and on what device. Follow-up reminders surface threads that went quiet. Snippets turn the paragraph you retype eleven times a week into two keystrokes. If you are fundraising or selling, that trio is the difference between chasing from memory and chasing from a list.

• Zero-migration: it runs on the address you already have
• Command-driven navigation instead of mouse-driven navigation
• Auto Drafts, Split Inbox, Auto Labels and Auto Archive do the triage
• Read statuses, follow-up reminders and snippets for outbound work
• Leaving costs nothing — cancel and your mail is untouched

Where HEY wins#

Concede this one outright: HEY's Screener is better than any AI triage, including ours, at the specific job of controlling first contact. When someone emails you for the first time, they land in the Screener and nothing else happens until you say yes or no. Say no and they never reach you again.

That is not a better model than AI classification in general. It is a categorically different one. AI triage is a probability applied to a message; the Screener is a permission applied to a person, set by you, once. A probability can be wrong twice about the same sender. A permission cannot.

The second win is that the whole system is opinionated in one direction. The Imbox holds mail from people you approved. The Feed holds newsletters as something you browse rather than something you clear. Paper Trail holds receipts and confirmations so they stop competing with real mail. Reply Later collects what needs an answer, and Focus and Reply works through that pile one at a time.

None of those are features you configure. They are the product's shape, and that is exactly the appeal — a founder with no time to build a filter system gets somebody else's finished one. HEY also blocks tracking pixels in incoming mail, includes its own calendar, and ships smaller conveniences Gmail never added: merging two threads into one, and renaming a badly written subject line.

Do you need a new address to use HEY?#

Effectively, yes — and this is the most-searched question about HEY for a reason. The personal plan gives you a @hey.com address of your choosing. HEY for Domains lets you run your own domain on HEY instead. There is no version where you point HEY at an existing Gmail account and read that mailbox.

There are two partial bridges, and it is worth knowing exactly how far each goes. You can forward your Gmail into HEY, which is the migration path HEY itself recommends — set forwarding in Gmail's settings, confirm the verification link, and new mail arrives in HEY without telling anyone your address changed. And HEY supports sending from an external address over SMTP, with username-and-password authentication or OAuth2 for Gmail and Outlook accounts.

But SMTP only sends. HEY's own page is explicit that this is unrelated to checking mail, so incoming mail from an external account still depends on forwarding. And forwarding has a real consequence HEY documents: replies you send from HEY are not saved back into Gmail. Your sent history splits across two systems from the day you start.

1. 1

   Forward, do not abandon

   Leave the Gmail account alive and forwarding. It is your fallback and your archive, and it costs nothing to keep.

2. 2

   Export before you need it

   Pull a Google Takeout MBOX archive and a vCard contacts export while you still have full access. HEY cannot import the mail, so this file is your search index for everything before the switch.

3. 3

   Change the accounts that matter, slowly

   Banking, domain registrar, Stripe, Apple and Google IDs. These are the ones where a forwarding loop breaking six months later becomes an actual problem.

4. 4

   Decide about sent mail

   Replies from HEY do not land back in Gmail's sent folder. Accept the split, or accept that Gmail's archive stops being complete on switchover day.

Pricing model: two different shapes#

We do not print competitor prices, because they change and a stale number on a page like this is worse than no number. Check the current figures on each vendor's own pricing page before you commit. What is stable is the shape, and the shapes are genuinely different.

Superhuman Mail is a per-seat subscription with a small number of tiers — an individual-oriented entry plan, a business plan, and an enterprise option — billed monthly or annually with the usual annual discount. There is no permanent free tier. As a solo founder you buy one seat, and the cost is a recurring line item against the account you already have.

HEY's personal plan is a flat annual fee for one @hey.com address, with a 30-day free trial that does not ask for a card. HEY for Domains is priced per user per month and, on HEY's own pricing page, does not carry a free trial. There is also a family plan covering several people on one bill.

The comparison that actually matters is not the number, it is what the number buys. With Superhuman you are paying for a layer and keeping your provider. With HEY you are paying for the provider itself, which means you are no longer paying Google or Microsoft for that mailbox — and it also means the software and the mailbox cannot be unbundled if you stop liking one of them.

Who each one is genuinely for#

Some readers should stop here and go buy, so let us be blunt about which.

Buy Superhuman Mail if your mail lives in Gmail or Outlook, your address is already everywhere, and your actual problem is volume and response speed rather than strangers getting through. It is also the only one of the two that is a candidate at all if your work mailbox is a Google Workspace or Microsoft 365 account you do not control.

Buy HEY if you are starting an address on purpose — a new company, a deliberate split between founder mail and personal mail, or an inbox you have decided to declare bankruptcy on. Buy it if the Screener is the feature you have wanted for years, and if you genuinely do not need your old mail inside the new client.

Buy neither if your mail is on Fastmail, iCloud, Proton, Zoho or a host's own IMAP server and you want to keep it there. Superhuman's site names Gmail and Outlook; HEY is not a client at all. Neither one is built for you, and the honest answer is a client that speaks IMAP.

A third option, honestly#

We build AI Emaily, so treat this section as the interested party it is — and it is here at the end, not the top, because you came looking for Superhuman and HEY and that comparison deserved to be settled on its own terms first.

AI Emaily sits on the Superhuman side of the structural divide: it is a client, it runs on the address you already own, and it adds Gmail, Outlook and generic IMAP, which is the gap that leaves Fastmail, Proton, Zoho and self-hosted users with nowhere to go in the head-to-head above. Nothing migrates and nothing changes for the people who email you.

Where we differ from Superhuman is what happens when the AI wants to act. Drafting a reply and sending one are different risks, so Copilot mode holds every send until you approve it, undo is available after the fact, and every agent action is written to an audit log you can read. Autopilot exists for the narrow cases you have explicitly authorised, and it is gated. Voice comes from a Personal Context brain and per-client profiles that you set, not from a model reading your old mail, and we do not train on your mail.

Where we lose to HEY is the concession we already made: we have no Screener. Our cold-email filter matches on sender behaviour and domain rather than a single address, which survives a sender rotating addresses in a way a per-address block does not — but it is still a classifier making a judgement, not a permission you granted once. If deterministic first-contact control is the thing you actually want, HEY is the better product and we would rather you knew that.

Our packaging is a 7-day free trial on Pro and Autopilot, card required, cancelled before day 7 and you pay nothing. We ship a downloadable Mac app (Apple Silicon only) and a Windows installer, a native iOS app, and a PWA on Android. There is no Linux build.

The one-line test#

Ask yourself which sentence is more true. "I get too much mail and answer it too slowly" points at Superhuman or another client-side layer. "Too many people I never agreed to hear from can reach me" points at HEY.

If both are true in roughly equal measure, weight the answer toward the option you can reverse. Cancelling a client costs an afternoon. Unwinding an address change costs months of forwarding, missed mail and account recovery.