Notion confirmed that Notion Mail is shutting down in 2026. Existing Gmail data stays put on Google’s side, but the AI triage, the Notion-style views over your inbox, and the desktop wrapper itself all go away. If you adopted Notion Mail for the keyboard-first workflow and the AI label rules, you need a new home before the sunset date hits. These are the seven Notion Mail alternatives for desktop we tested in 2026.
Quick comparison
| App | Best for | Platforms | Free plan | Starting price | Standout |
|---|---|---|---|---|---|
| Spark | Smart inbox + team mail | Windows, macOS | Yes | $7.99/user/mo | Shared drafts and inbox |
| Superhuman | Speed and AI triage | Windows, macOS | No | $30/mo | Keyboard-first workflow |
| Mimestream | Native macOS Gmail | macOS | Yes | $4.99/mo | Native AppKit, no Electron |
| Proton Mail | Encrypted inbox | Windows, macOS, Linux | Yes | $4.99/mo | End-to-end encryption |
| Thunderbird | Open-source classic | Windows, macOS, Linux | Yes | Free | Local-first, extensible |
| Mailspring | Free Electron client | Windows, macOS, Linux | Yes | $8/mo | Unified inbox, send later |
| Shortwave | AI for Gmail | Windows, macOS, Linux | Yes | $9/mo | Notion Mail’s closest match |
Why Notion Mail users need an alternative
The shutdown notice is the obvious push. The other drivers from the Notion Mail Reddit and the official changelog:
- AI auto-labelling stops working the moment Notion turns off the service. The rules don’t transfer.
- The desktop wrapper is Electron-only and was always slower than Spark or Mimestream on the same Mac.
- Notion Mail only supported Gmail. Outlook, iCloud, and IMAP users were never the audience.
- The team-shared views never reached parity with Spark’s shared drafts.
- The pricing trajectory was uncertain. Notion bundled it with paid plans, but the per-seat math kept changing.
The seven picks below cover the main reasons you might have chosen Notion Mail in the first place: AI triage, fast keyboard navigation, shared team mail, or a single inbox across accounts.
The 7 best Notion Mail alternatives on desktop
Shortwave, the closest functional match
Shortwave is the Notion Mail replacement closest in spirit. Gmail-only, AI assistant baked into the compose window, summaries on long threads, and bundles that group similar messages so the inbox feels like Inbox by Gmail did. The macOS, Windows, and Linux apps are Electron but feel snappier than Notion Mail did, and the AI features are usable on the free tier with daily caps.
Where it falls short: Gmail-only, same constraint as Notion Mail. The AI features stay behind a paywall after the trial. The mobile companion is solid but the team features are thinner than Spark’s.
Pricing:
- Free: full client, limited AI summaries per day
- Paid: starts around $9/mo for unlimited AI, more for power users
- vs Notion Mail: similar pricing tier, but the product survives
Switching from Notion Mail: Sign in with the same Google account and Shortwave pulls labels and filters. AI rules need a one-time rebuild.
Download: Shortwave for desktop
Bottom line: Pick Shortwave if Notion Mail’s AI triage was the headline feature for you and Gmail is your only account.
Spark, best for shared inboxes and teams
Spark by Readdle is the longest-running smart inbox client on macOS and is now strong on Windows too. The pitch is the smart inbox: pinned senders, newsletters auto-grouped, notifications only for people. Team features layer on top: shared drafts, comment threads on emails, delegate access. It supports Gmail, Outlook, iCloud, Yahoo, and IMAP, which Notion Mail never did.
Where it falls short: The Linux app is missing. The free tier limits the number of connected accounts and AI assistant uses. Some users dislike how aggressively the smart inbox hides newsletters.
Pricing:
- Free: up to two paid accounts, smart inbox, basic AI
- Paid: Premium $7.99/user/mo, Teams $9.99/user/mo
- vs Notion Mail: cheaper per seat, broader account support
Switching from Notion Mail: Add the same Gmail account, run the import. Newsletters and senders get categorized automatically in a day or two.
Download: Spark for desktop
Bottom line: Pick Spark if you want Notion Mail’s curation philosophy plus team features and multi-account support.
Superhuman, best for speed and AI triage
Superhuman is the keyboard-first inbox Notion Mail was clearly modelled after. Split inbox, snippets, scheduled send, AI write and reply assistance, and the strict zero-Electron-feeling performance. The onboarding includes a 1:1 walkthrough that teaches the keyboard shortcuts most people never bother to learn.
Where it falls short: $30/mo is the entry price and there is no free tier. Gmail and Outlook only. The app is fast but the pricing keeps it niche.
Pricing:
- Free: no
- Paid: $30/mo standard, AI features included
- vs Notion Mail: noticeably more expensive but the product is mature
Switching from Notion Mail: Same Gmail or Outlook account, no data migration needed. The keyboard layout is the steepest learning curve.
Download: Superhuman for desktop
Bottom line: Pick Superhuman if speed and shortcuts were the reason you picked Notion Mail, and the price isn’t a blocker.
Mimestream, best native macOS Gmail client
Mimestream is a native AppKit Gmail client written by an ex-Apple Mail engineer. It feels like macOS Mail used to feel: instant launch, no Electron tax, deep keyboard shortcut coverage, and proper support for Gmail-specific features like labels, categories, and filters. The Windows app is in beta and there is no Linux version.
Where it falls short: Gmail-only, like Notion Mail. macOS-first; Windows is catching up but iOS support arrived recently and is still maturing. No AI features in the same league as Shortwave or Superhuman.
Pricing:
- Free: trial period
- Paid: $4.99/mo or $49.99/year
- vs Notion Mail: significantly cheaper, no AI, vastly faster
Switching from Notion Mail: Sign in with the same Google account. Filters and labels work as expected.
Download: Mimestream for desktop
Bottom line: Pick Mimestream if you used Notion Mail on macOS and the AI features were not the point, and you want the fastest Gmail experience on the platform.
Proton Mail, best for encrypted inboxes
Proton Mail is the choice when privacy outranks AI. End-to-end encryption with other Proton users, zero-access encryption for everyone else, and a Swiss-based company that publishes its threat model. The desktop apps for Windows, macOS, and Linux became fully stable in 2024 and now match the web client in features.
Where it falls short: You have to migrate your inbox to a Proton address; it isn’t a Gmail viewer. The free tier caps storage at 1 GB and limits aliases. AI features are minimal.
Pricing:
- Free: 1 GB storage, one address, basic encryption
- Paid: Mail Plus $4.99/mo, Proton Unlimited $9.99/mo
- vs Notion Mail: comparable paid price, completely different threat model
Switching from Notion Mail: Use the Easy Switch importer to pull mail and contacts from Gmail. Update senders with your new Proton address.
Download: Proton Mail Desktop
Bottom line: Pick Proton Mail if you wanted a fresh start away from Google as part of the Notion Mail exit.
Thunderbird, best free open-source classic
Thunderbird is the open-source standard. MZLA Foundation has reinvested heavily since 2022 and the 2025 redesign brought it close to modern smart inbox clients in look. Full IMAP, POP, Exchange, and JMAP support, calendar built in, and the add-on ecosystem still ships extensions that match many AI features Notion Mail had.
Where it falls short: AI features are extension-driven and uneven. The default UI shows its history if you turn off the new card view. Mobile (K-9 Mail rebrand) is still maturing.
Pricing:
- Free: yes, fully featured
- Paid: optional donations
- vs Notion Mail: no comparison on price; feature gap closing
Switching from Notion Mail: Add the Gmail account, OAuth handles the auth. Import mbox or eml exports if you backed up the Notion Mail database.
Download: Thunderbird for desktop
Bottom line: Pick Thunderbird if you want no subscriptions, local-first storage, and the freedom to script your own automations.
Mailspring, best free Electron client
Mailspring sits between Thunderbird and Spark. Free unified inbox across Gmail, Outlook, Office 365, iCloud, and IMAP, with a clean Electron UI that doesn’t feel as dated as Thunderbird’s defaults. Send later, snooze, link tracking, and templates are free; the Pro tier adds open tracking, contact enrichment, and per-template metrics.
Where it falls short: Electron means heavier RAM than Mimestream or Superhuman. Pro features are interesting but not essential. The mobile companion app does not exist.
Pricing:
- Free: yes, full mail features
- Paid: Pro $8/mo for tracking and analytics
- vs Notion Mail: free for the core experience, far cheaper Pro tier
Switching from Notion Mail: Add the Gmail account, set up signatures and templates. No automatic AI rule import; rebuild as filters.
Download: Mailspring for desktop
Bottom line: Pick Mailspring when you want a free unified inbox client that runs on Windows, macOS, and Linux without subscribing to anything.
How to choose
If Notion Mail’s AI was the draw, pick Shortwave. It is the closest one-for-one swap and the cheapest AI-first option.
If keyboard speed and the Superhuman-style flow was the draw, pick Superhuman. Pay for the polish, save the time.
If you only ever opened Notion Mail on a Mac and wanted the native feel, pick Mimestream. The Gmail-only constraint is identical and the performance gain is huge.
If you want to take this transition as a moment to leave Google entirely, pick Proton Mail. The migration is real work but you end up with a different threat model.
If you want to stop paying for mail clients altogether, pick Thunderbird first and fall back to Mailspring if the UI feels too utilitarian.
Stay on Notion Mail through the sunset window only if you need to export rules and templates that you wrote by hand. Everything else can move now.
