Semaphor is a radar that sits beside your mail: it watches all your mailboxes, surfaces VIPs and what matters — and touches nothing. One trustworthy signal instead of notification noise.
macOS + Windows · your IMAP servers remain the only network destination.
With several mailboxes — or simply too much mail — what matters drowns: a client lands in spam, an invoice under “Newsletter”, an urgent request sleeps in the box you never open. So you reopen your mail “just in case”, ten times a day. Semaphor flips it: the volume gets watched, not you.
No automatic sorting deserves 100% trust — ours included. The difference: here, the promise can be checked in three seconds.
Everything the radar left out is one click away — nothing is hidden, ever. Set aside by mistake? One gesture on the sender and it surfaces again instantly, for good.
→ the reason you can truly let go of your mailboxThe spam folder is scanned too: a client buried by your provider's filter shows up in Semaphor. You recover them without opening your mailbox — and without the whitelisting chore: mark them VIP, done forever.
→ a client falling into spam can no longer escape youSemaphor never downloads message bodies: no attachments, no HTML, no tracking pixels. It even runs on a production machine deliberately WITHOUT a mail client — visibility without the attack surface.
→ guaranteed by construction, not by promiseStandard IMAP (Infomaniak, Swiss hosts, cPanel, hosted Exchange…). Strictly read-only: Semaphor moves, flags and deletes nothing — ever.
VIPs and important mail surface in a small panel in your system bar. Deterministic and explainable — every line says why it's there. ★ VIP, ✓ known, 🔇 mute: three gestures and the radar learns.
The flag only rises when unread VIP or important mail arrives. The rest of the time: nothing. You open your mail app to reply — not to keep watch.
Like the flag on American mailboxes: down, all is calm; up, something deserves your attention. A binary signal in the corner of your eye, replacing the notification barrage.
Every claim below can be verified in the product — not a line of marketing.
No subscription, no mandatory account, no “per user per month”. You buy Semaphor, it's yours.
0 CHF — forever
launch price shared with testers
Semaphor is used daily by its author on 5 real mailboxes. We're looking for a handful of testers with several mailboxes — or too much mail — for the last stretch before v1.
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