jMail - your email, on your Mac.
A native, local-first email client for macOS - multi-account IMAP with a unified inbox, on-device phishing & ad/tracker protection, and natural-language search, with contacts and calendar built in. Designed for huge mail archives, with everything stored compressed on your own Mac.
Built for big mailboxes
If years of mail and attachments have made your inbox slow, jMail is designed for you: it stores raw messages compressed in a local database, so enormous archives stay fast and compact.
- Multi-account IMAP & SMTP - Gmail, iCloud, Outlook, Yahoo or any IMAP server, synced together in one unified inbox
- Guided account setup - jMail auto-detects your provider's mail servers from your address (or import a configuration profile), and walks you through Gmail/iCloud/Outlook/Yahoo app passwords
- Compressed local storage - Zstandard-compressed message bodies in SQLite keep large archives small and quick
- Natural-language search - just type "unread from alice with a pdf last month"; combine senders, dates, attachments, size and status, all matched locally
- Voice search - dictate your search out loud, transcribed on-device - no audio ever leaves your Mac
- Full-text search - fast FTS5 search across your entire mailbox
- Offline send queue - compose and queue mail (with attachments preserved) while offline; it sends when you reconnect, with an Undo Send window and scheduled send
- On-device spam filtering - Bayesian plus heuristic filtering that learns locally, with no message ever sent to a cloud filter
- Rules, signatures & blocked senders - organize and personalize mail automatically
Privacy & security, on by default
jMail actively protects you while you read - and nothing about your mail leaves your Mac.
- Phishing & spoof detection - flags forged senders and credential-harvesting links with a clear warning banner, using weighted signals (SPF/DKIM/DMARC, look-alike domains, brand impersonation)
- Ad & tracker blocking - Standard or Strict modes block known ad and analytics domains as messages render; Strict also hides leftover ad blocks
- Tracking-pixel stripping - invisible 1x1 "open tracking" pixels are removed by shape
- Link tracking removal - utm_* and click-ID parameters are stripped from links
- Ad scan & privacy stats - scan your mailbox for tracker-heavy messages and see what jMail has blocked
- On-device & sandboxed - no telemetry, no cloud scanning, and no message text or audio sent to Apple or anyone else
A complete client
✉️ Mail that works the way you do
Threading, flagging, priority and follow-up status; drafts auto-save as you type; rich-text compose with attachments and inline images; per-sender arrival sounds and colored unread dots on the Dock icon.
👤 Contacts
A built-in address book with groups, duplicate merging, CSV/vCard import and export, natural-language contact search, and sync with macOS Contacts.
📅 Calendar
Sync with Google, Outlook and macOS Calendar - recurring events, working hours, meeting invitations and RSVP, and find-a-time, all in local databases.
🧠 Apple Intelligence
On supported Macs, optional on-device message summaries (TL;DR) and assistance - processed entirely on your Mac.
❓ Built-in help
Concise "?" help sits next to every feature throughout the app - and you can edit any of it into your own notes.
🔒 Private by default
Your mail lives on your Mac. No cloud account, no telemetry, no scanning your messages to sell ads.
Support
Need help with jMail? We're here to assist you.
Contact Us
jMail hasn't launched yet. For questions, feature requests, or to be told when it ships, please email us at:
Once you're running jMail, Settings ▸ Email Features ▸ Report a Bug… sends diagnostic details directly to IBC Partners, never to a third party.