Silent by default. Notification by exception.
Lull Mail is a free, open-source AI email app for Gmail, Outlook, iCloud and IMAP. Runs locally on Mac, Windows and Linux, summarizes each message and ranks what matters. No servers of ours in between.
Each email read, summarized and scored. Three out of 187 rise to the top.
Four jobs, done quietly.
Every email gets classified (important, transactional, newsletter, promo, spam) and summarised in two lines. Importance score from 1 to 10. You see at a glance which message deserves three minutes and which deserves three seconds.
A notification only fires when something genuinely urgent lands. For everything else, radio silence. Your phone gets to be a phone again.
Detects newsletters you haven't read in months. Spots the unsubscribe link in one click. Suggests automatic rules: move, mark read, delete.
No cloud, no SaaS, no account to create with us. A native desktop app that talks straight to your IMAP servers: Gmail, Outlook, iCloud, Yahoo, ProtonMail Bridge, or any standard server.
Honesty about what we don't do.
Keep using Outlook, Gmail Web, Apple Mail. Lull Mail works alongside them, read-only on your mailboxes unless you authorise it to apply rules.
It plugs into your existing accounts. Nobody wants to change email; we don't ask you to.
Your IMAP credentials never leave your machine. The database lives locally on your drive. Want to wipe everything? One button.
We don't sell your emails. We don't index them to target ads. We do nothing except what's written on the box.
Lull Mail isn't trying to replace your inbox. It sits in front of it. Here's how that compares.
Lull Mail
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SaneBox
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Hey
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|---|---|---|---|---|
| What it is | Native desktop app, layer over your accounts | Cloud service, sorts into IMAP folders | Plugin for Outlook / Apple Mail / Gmail | Standalone email service with new address |
| Keep your existing address | ||||
| Where your emails live | Your machine | SaneBox servers + your IMAP | Your provider + Mailbutler cloud for AI | Hey servers |
| Pricing | Free | $7–36 / mo | $5–30 / mo | $99 / yr |
| Works offline (browse synced mail) | ||||
| Open source | ||||
| Platforms | Windows, macOS, Linux | Any IMAP client | Outlook, Apple Mail, Gmail web | Web, iOS, Android, macOS |
| Telemetry on your emails | None | Per their privacy policy | Per their privacy policy | Per their privacy policy |
| Replaces your email client |
What can stay on your machine, stays on your machine.
Free with the default local AI: the models run on your machine and cost nothing once downloaded. Switch to OpenAI in Settings if you prefer cloud quality (you pay OpenAI directly, around $0.15 per 100 emails). Push notifications go through ntfy.sh, also free.
Yes for reading what you've already synced. With the default local AI you can also analyze new mail offline once the models are downloaded. Fetching new mail from your IMAP provider still needs the network.
No. They sit in your OS keyring (Windows Credential Manager, macOS Keychain, or Linux Secret Service depending on your platform). The config file only stores a reference; the real password loads into memory at runtime. For Gmail, Outlook, Yahoo, or iCloud, use an app password anyway. It's easier to revoke if something goes sideways.
Yes. Lull Mail is read-only on your mailboxes by default and doesn't register itself anywhere on your system. Uninstall, delete the data directory, done. Nothing stays behind.