SIEVER Mail
6.0#129 in email clientsLinuxmacOSWindows
VisitSIEVER Mail vs Spike
What both publish
| Fact | SIEVER Mail | Spike |
|---|---|---|
| App coverage | desktop | all |
| Platforms | The build documentation lists macOS arm64 and x64, Windows x64, and Linux x64 and arm64 targets. | Spike lists iOS, Android, Windows, macOS, and web browser as supported devices. |
| Privacy | The project states that it has no telemetry or third-party tracking. | Spike says it is ad-free and does not rent, sell, distribute, or monetize user data, while non-personal data may be used to improve its service. |
| Product | SIEVER Mail is an open-source desktop email client built with Electron. | Spike describes itself as an AI-powered inbox that brings email, calls, notes, tasks, and to-dos into one hub and turns email threads into chat-like conversations. |
| Security | The technical documentation says incoming HTML is sanitized and shown in sandboxed frames, and opened attachments do not execute. | Spike says message data is encrypted with AES-256 using a per-message private key and that it has periodic external security audits. |
| Support | The README directs users to the GitHub issue tracker for issues. | The pricing page lists standard support for Starter, priority support for Team and Pro, and VIP support for Business and Ultimate. |
| Unified inbox | Its unified inbox gathers selected accounts’ inboxes and labels each message with its account. | Yes |
SIEVER Mail plans
No prices published.
Spike plans
- StarterFree
- Team$4 a month
- Business$8 a month
- FreeFree
- Pro$6 a month
- Ultimate$12 a month
Pick SIEVER Mail if…
You want what its maker publishes above — check its page for the details.
Pick Spike if…
Spike may suit people or teams looking to bring email, scheduled messages, and calendar tools together across desktop and mobile platforms. Its plans cover different email, storage, team, and file-upload needs.