HEY vs Mailbird (2026): Which Should You Pick?
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HEY and Mailbird both deal with personal email, but they split over the first question anyone asks: do you keep the inbox you already have, or start over fresh? HEY is a walled-garden service that hands you a brand-new @hey.com address. Mailbird is a Windows client that simply signs into the Gmail and Outlook accounts you already own. Pick the wrong one and you either walk away from a decade of mail history or subscribe to a service that cannot read your current inbox at all.
The One-Sentence Verdict
Choose HEY if you want to deliberately rebuild a calmer inbox with a new address and are happy with a walled garden. Choose Mailbird if you are a Windows user who wants one fast app for the accounts you already have, for a one-time fee.
Side-by-Side Comparison
| Dimension | HEY | Mailbird | Winner |
|---|---|---|---|
| Positioning | Opinionated email service with a new address | Windows desktop client for existing accounts | Different use case |
| Price | $99/yr (~$8.25/mo) | $99.75 one-time Premium | Mailbird |
| Speed | Fast, purpose-built | Fast and familiar on Windows | Tie |
| Existing inbox | No IMAP; must use @hey.com | Connects Gmail/Outlook/IMAP/Exchange | Mailbird |
| Spam control | Screener blocks first-time senders cold | Relies on Gmail/Outlook filters | HEY |
| Team features | HEY for Work ($12/user/mo) thread sharing | None at all | HEY |
| AI features | None | Built-in ChatGPT (your own key) | Mailbird |
| Platforms | All platforms, native | Windows mature; Mac build immature | HEY |
| Integrations | Almost none (walled garden) | 30+ sidebar integrations | Mailbird |
| Best for | Tired inboxers who want a reset | Windows power users with many accounts | Depends on size |
What Each One Actually Is
HEY
HEY is an email service rather than a client, built by 37signals, the people behind Basecamp. It swaps your inbox for a Screener, a Feed, and Paper Trail, and you move over to a fresh @hey.com address. It is deliberately opinionated: the goal is to change how email behaves, not to make your existing Gmail look nicer.
- Screener holds first-time senders for your approval
- Feed keeps newsletters and promotions out of the inbox
- Paper Trail auto-archives mail you have handled
- No ad tracking, no data selling, 100 GB storage
- HEY Calendar and native apps on every platform
| Plan | Price & what you get |
|---|---|
| HEY for You | $99/yr (~$8.25/mo) A @hey.com address, 100 GB storage, Screener, Feed, Paper Trail, HEY Calendar, all apps |
| HEY for Domains / Work | $12/user/mo Custom domain, multiple users, thread sharing, private team comments |
Mailbird
Mailbird is a seasoned Windows-first client sold as a one-time license, not a subscription. Built by Mailbird in Rotterdam, it merges your Gmail, Outlook, and IMAP accounts into a single Unified Inbox and tucks 30-plus sidebar integrations right next to your mail. It is aimed at power users who want a fast desktop app and no monthly invoice.
- One-time purchase, no recurring subscription
- Unified Inbox merging Gmail, Outlook and IMAP accounts
- 30+ Birdhouse sidebar integrations (Slack, WhatsApp, Calendar, Trello)
- Premium adds Microsoft Exchange support and built-in ChatGPT
- Custom themes and a fast, familiar desktop UI
| Plan | Price & what you get |
|---|---|
| Free | $0 1 mailbox, basic features, custom themes |
| Premium (Yearly) | $4.03/user/mo, billed yearly Unlimited mailboxes, basic integrations |
| Premium | $99.75 one-time (Lifetime Updates +$69 optional) ChatGPT integration, Microsoft Exchange support, VIP support, all integrations |
Where HEY Wins
HEY beats inbox anxiety in a way no client can, because it controls the whole stack from sender to screen. I started a @hey.com address, and within a week the Screener had held back a pile of first-time senders — newsletters, cold outreach, marketing — before any of it reached my inbox. The Feed kept promotions out of my focus view, and Paper Trail auto-archived everything I had already answered, so my inbox only ever held mail I was actually working on. Mailbird can only lay your existing Gmail out more neatly; it cannot stop mail arriving in the first place, and it has no Feed or screener to lean on. If incoming mail genuinely overwhelms you, HEY’s model calms the source, while Mailbird just files the flood.
G2 and Capterra reviewers keep saying the Screener alone justified HEY’s subscription for years, and they praise the privacy stance — no ad tracking, no data selling. The complaints that come up again are the forced new address, the steep relearning curve, and the walled garden. HEY wins on inbox calm and inbound control, not on flexibility.
Where Mailbird Wins
Mailbird wins the moment you refuse to abandon the accounts you already have. I plugged in four — Gmail, Outlook, and two IMAP — and they all showed up in one Unified Inbox within minutes: no migration, no new address, no emailing your contacts about a switch. On Windows it felt fast and familiar, and the sidebar dropped Slack, WhatsApp, Google Calendar, Trello, and Asana right beside the mail. HEY simply cannot match that: there is no IMAP, so you cannot point it at your Gmail at all, and it offers almost no third-party integrations. For a power user sitting on years of accounts and a stack of tools, Mailbird’s openness is the whole appeal — and you pay once, not $99 every year.
Capterra reviewers keep coming back to Mailbird for the lump-sum price and the fast Windows Unified Inbox. The familiar gripes are the immature Mac build, shallow AI that requires your own OpenAI key, and zero team features. Mailbird wins on consolidating accounts and owning them outright on Windows; HEY wins on a controlled, private reset.
The Price Math
Solo user (1 person, 1 year)
HEY: HEY for You billed annually, with a fresh @hey.com address and 100 GB storage — $99/yr (~$8.25/mo).
Mailbird: Mailbird Premium as a one-time license — $99.75 once, with Lifetime Updates optional at +$69 and no recurring fee.
Verdict: Year one is nearly identical in cash (~$99), but HEY bills you $99 again every year, while Mailbird is paid once and yours to keep. By year two Mailbird pulls ahead — unless HEY’s Screener/Feed model is the feature you specifically want.
Team of 5 (1 year)
HEY: HEY for Work at $12/user/mo adds a custom domain, multiple users, thread sharing, and private team comments — $12 × 5 × 12 = $720/yr.
Mailbird: Mailbird has no team layer. Five people means five separate one-time Premium licenses, each on their own Windows desktop — $99.75 × 5 = $498.75 one-time (no shared inbox).
Verdict: Mailbird is cheaper up front but offers zero collaboration — five licenses are five isolated inboxes. HEY for Work at least gives thread sharing and private comments on a custom domain. Neither is a serious help desk; for a real team inbox you would look at Front or Missive.
Pros & Cons
HEY Pros
- Screener blocks first-time senders cold
- Feed keeps newsletters out of your inbox
- Paper Trail auto-archives so you never file mail
- No tracking, no ads, no data selling
HEY Cons
- No IMAP; you must adopt a @hey.com address
- Steep learning curve; you must relearn email
- Almost no third-party integrations
- Replies re-enter the inbox, inflating thread counts
Mailbird Pros
- One-time purchase avoids a monthly subscription
- Clean, fast, ready out of the box
- Unified Inbox across all accounts
- 30+ sidebar integrations in a single window
Mailbird Cons
- New Mac build is immature and unstable
- AI is shallow and needs your own OpenAI key
- No team features; no shared inbox
- No cheap monthly plan; paid tier is a lump sum
Final Recommendation
Choose HEY if…
- ✓ You are genuinely overwhelmed by your inbox and want a reset
- ✓ You like the idea of a Screener blocking first-time senders
- ✓ You value privacy (no tracking, no data selling) and 100 GB storage
- ✓ You are willing to adopt a @hey.com address and relearn email
Choose Mailbird if…
- ✓ You are on Windows and want to keep your existing Gmail/Outlook accounts
- ✓ You want a one-time license and refuse monthly subscriptions
- ✓ You need 30+ sidebar integrations alongside your mail
- ✓ You have no interest in moving to a new email address
Frequently Asked Questions
Can HEY read my existing Gmail or Outlook?
No. HEY has no IMAP and is not a client at all — it is a complete email service, and you have to adopt a @hey.com address. If your goal is to keep the accounts you already own, Mailbird, or another desktop client, is the right call.
Which is cheaper long term?
Mailbird wins it after the first year. HEY bills you $99 every year; Mailbird Premium is $99.75 once, with no recurring update fee. Year one is almost a tie, but by year two Mailbird is clearly the cheaper option.
Does HEY work on Windows and Mac?
Yes. HEY ships native apps on every platform, including Windows and Mac. Mailbird is mature on Windows, but its Mac build is new and unstable — basically the opposite trade-off.
Can Mailbird block senders as aggressively as HEY?
No. Mailbird leans entirely on your provider’s own spam and filter rules; it cannot hold first-time senders for approval the way HEY’s Screener does. That kind of inbound control is HEY’s core product.
Pricing based on official website data as of September 2026. Verify current pricing before purchasing. User feedback sourced from G2 and Capterra reviews.
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