Your email, the way you know it. All your accounts. Nobody's cloud.

ConversationsUnified inboxSearchWriteTrackers

A whole conversation, in order

Replies are grouped into one conversation even when they live in different folders, so your answer from Sent sits right next to the message it answers. Expand it in the list to jump to any message.

All your accounts in one inbox

Work, personal and that old domain you still check: one inbox for all of them, split into Focused and Other, with each account in its own colour. Every account keeps its own folders, too.

Search that answers before you finish typing

Search every account at once, on your own computer, with filters for sender, recipient, attachments, flagged and unread. The index never leaves your PC.

Reply right where you're reading

Write in the reading pane or in its own window, with formatting, attachments, signatures and one identity per account. Ctrl+R, Ctrl+Shift+R and Ctrl+F do what you expect.

Read your mail without being watched

Remote images and tracking pixels are blocked until you say otherwise, so senders don't learn when — or whether — you opened their message. Show images once, or trust a sender for good.

• < 1 sfrom click to window
• 23 msto search 50,000 emails
• 30 msto open the next message
• 0servers of ours in between

Measured on our development PC with Linux: start-up of the packaged build to the first window; search = median of 15 queries over a 50,000-message mailbox; next message = median full-window redraw with 49,792 real messages synced.

1. Bring what you have

   Import your accounts from Thunderbird, or from classic Outlook on Windows: servers, identities and signatures come over, and your old program isn't touched.

2. Or just type your address

   1B Mail finds the settings by itself — for IONOS, Gmail, Yahoo, iCloud, GMX and any provider that publishes them — and tests the connection before saving.

3. Passwords in your keychain

   Passwords go into an encrypted vault whose key lives in your system's keychain: Windows Credential Manager or the Linux Secret Service.

4. Then it's all local

   Mail syncs to your computer and stays readable offline. Actions are queued and sent when you're back, and almost everything can be undone.

• Focused and Other

  Newsletters and notifications go to Other with local rules, so Focused shows what matters.

• Outlook shortcuts

  Delete, Ctrl+R, Ctrl+N, Insert to flag, arrows to move: the keys your hands already know.

• Undo almost anything

  Deleted, moved or archived by mistake? Undo it from the notice at the bottom of the window.

• Works offline

  Read and sort without a connection; changes are queued and synced when you're back online.

• Light, dark and your size

  Light, dark or system theme, three densities, reading pane right, bottom or off, and text size from 80 to 200 %.

• Simplified or classic ribbon

  A clean single-row ribbon, or the classic one with big buttons and labels — your choice.

• Your default mail app

  Click a mailto: link anywhere and 1B Mail opens a new message; notifications and a tray icon tell you what arrived.

• 21 languages

  The whole program in 21 languages, with the terms each language's Outlook uses.