RenlumiTwo ways to read your mail
The classic view with folders, list and reading pane, or the per-sender view that groups every message by person, with quick actions like “Mark all read”, “Archive all” and “Create rule”.
Previewv0.2.86 · in active development
Your inbox,
Your inbox,
brought to light.
Renlumi brings messages, conversations and appointments together in a fast, tidy, privacy-respecting desktop client. Your data stays on your device.
Works with the inboxes you already use
- Gmail
- Outlook / Microsoft 365
- iCloud
- Yahoo
- IMAP / SMTP
Features
Everything you need. Nothing you don't.
A client built in Rust to be fast, that works offline and keeps your inboxes in order.
Find anything instantly
Global search with Ctrl/⌘+K: a local full-text index over subject, body, recipients and attachment names, with filters for sender, status and date.
All your inboxes in one place
Multiple accounts, unified inbox and shared mailboxes. OAuth2 for Gmail, Microsoft 365 and Yahoo; IMAP/SMTP for everything else.
Undo send
Hit “Send” too soon? You get a few seconds to change your mind, right from the toast.
Coming from Thunderbird?
Import Thunderbird and Apple Mail profiles, .mbox files and .eml folders. Export to mbox or EML without rewriting headers.
Renlumi Calendar
CalDAV, Google Calendar and Microsoft events next to your messages. Invitations received as attachments become event proposals.
Renlumi Files
Every attachment in a dedicated view, with filters and preview, without hunting for the right message.
Contact card
For each person: profile, recent messages, attachments and shared events. Plus a VIP list for the people who matter.
Rules and filters
Per-sender rules and filters applied to new mail: archive, mark as read or delete automatically.
Built-in OpenPGP
Sign and encrypt from the composer, import and export keys. Private keys stay in the encrypted keychain.
AI assistant, only if you want it
Thread summaries and reply suggestions in your own style. Off by default, with explicit consent and your choice of provider: local Ollama or an OpenAI-compatible endpoint.
Built-in MCP server
Connect your AI agents to your mail and calendar. Disabled and read-only by default; nothing is sent without your confirmation.
Views
Read by folder. Or by person.
Switch views in one click: same inboxes, same cache, two different perspectives.
Privacy
Your data stays yours.
Renlumi has no central server: your mail is stored locally and nothing leaves your device without an explicit action from you.
Offline-first
Mail synced to a local SQLite database: read and search even without a connection.
Safe credentials
Passwords and OAuth2 tokens live only in the system keychain. TLS connections.
Trackers stopped
Remote images blocked and tracking pixels held back until you allow them.
Suspicious links
When a link's text hides a different address, Renlumi shows the real domain before opening it.
Opt-in AI
The assistant is off by default and shows exactly which data would be sent.
Zero telemetry
No usage tracking and no recipients ever added to your emails.
Coming soon
Towards your second brain.
Renlumi starts as an email client and grows to bring together everything you need to work.
Per-sender chat Coming soon
The per-sender view becomes a real chat, like Telegram or WhatsApp.
Renlumi Notes Coming soon
Notes linked to messages, people and events.
Renlumi Tasks Coming soon
Tasks and reminders straight from your inbox.
Second brain Coming soon
Mail, calendar, contacts, files, notes and tasks in one place.
v0.2.86Active development
In active development — coming soon.
We're preparing the first release for Windows, macOS and Linux. In the meantime, see what it already does and what's coming.
Frequently asked questions
Which systems does Renlumi run on?
Renlumi is a desktop app for Windows, macOS and Linux, built with Tauri, Rust and React.
Which inboxes can I connect?
Gmail, Outlook/Microsoft 365, iCloud, Yahoo and any IMAP/SMTP mailbox. Gmail, Microsoft 365 and Yahoo sign in with OAuth2.
Where are my emails stored?
On your device, in a local database. Credentials live in your operating system's keychain. Renlumi has no server that reads your mail.
When will it be available and how much will it cost?
Renlumi is in active development. Release date and price haven't been set yet: news will be published on this site.
Can I use my own AI?
Yes, if you want to. The assistant is off by default and works with local Ollama or an OpenAI-compatible endpoint, only after your consent.