Synapse
The facts below are what the maker publishes about Synapse, checked and dated. Our editors have not written about it yet.
Plans and prices
From Synapse's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Synapse | €4.99, paid once | Lifetime access · All future updates included · No tiers · One-time purchase · No subscription |
The facts
Each one read from Synapse's own pages, with the date it was checked.
Where it runs
- App coverage
- desktopchecked 20 Sep 2026
What it does
- Availability
- The site says Synapse is in active development and invites visitors to join a launch-notification list.checked 11 Oct 2026
- Calendar tools
- Yeschecked 20 Sep 2026
- Email accounts
- Synapse supports OAuth2 for Google and Microsoft via PKCE and says it does not store passwords.checked 11 Oct 2026
- Email sync
- It uses the Gmail REST API for Gmail and IMAP IDLE push for other providers.checked 11 Oct 2026
- Integrations
- Listed plugins include Asana, ClickUp, Google Calendar, and Reminders; the site also describes adding integrations in Rust.checked 11 Oct 2026
- Local AI
- Its optional Qwen3.5-4B model runs on a Vulkan GPU, or users can provide their own cloud API key.checked 11 Oct 2026
- Local data
- Mail is cached in a local SQLite database, and the site says AI inference is offline after the model's one-time download.checked 11 Oct 2026
- Notable limit
- Windows 11 x86_64 is listed as the only supported platform.checked 11 Oct 2026
- Offline access
- Yeschecked 20 Sep 2026
- Privacy
- The site lists zero telemetry events, analytics scripts, cloud relays, and stored passwords.checked 11 Oct 2026
- Product
- Synapse is a Windows email client with on-device AI.checked 11 Oct 2026
- Requirements
- The stated requirements include Windows 11 x86_64, 16 GB RAM, and 1 GB storage, plus about 2.5 GB for the optional AI model.checked 11 Oct 2026
- Search
- It combines BM25 full-text search and 768-dimensional multilingual semantic embeddings, with support for 100+ languages.checked 11 Oct 2026
- Security
- The site says credentials are encrypted with AES-256 and the key is sealed inside the device's hardware TPM.checked 11 Oct 2026
- Support
- The site lists [email protected] as its contact email.checked 11 Oct 2026
- Unified inbox
- Yeschecked 20 Sep 2026
Money
- Free plan
- Nochecked 20 Sep 2026
The company
- Headquarters
- Turin, Italychecked 28 Sep 2026
- Maker
- The site identifies Valerio as the builder of Synapse.checked 11 Oct 2026
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