Spike
8.5#4 in email clientsFrom $4 a monthFree planAndroidiOSWebmacOS
VisitSpike vs Sup
What both publish
| Fact | Spike | Sup |
|---|---|---|
| App coverage | all | desktop |
| Integrations | Spike supports Google Drive, Dropbox, and OneDrive for cloud attachments, and its calendar feature names Google Calendar, Outlook, and Apple Calendar. | The project wiki documents mail retrieval through OfflineIMAP, mbsync/isync, and Fetchmail, and sending through msmtp, putmail, and sendEmail. |
| Privacy | 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. | The feature list states that Sup supports GPG. |
| Product | 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. | Sup is a console-based email client for people with a lot of email. |
| Security | Spike says message data is encrypted with AES-256 using a per-message private key and that it has periodic external security audits. | The security guide cautions that attachment content-type and filename metadata are sender-controlled and should not be used uncritically in commands. |
| Support | The pricing page lists standard support for Starter, priority support for Team and Pro, and VIP support for Business and Ultimate. | The project directs bug reports to its GitHub issue tracker and provides a mailing list for general discussion, development, and announcements. |
Spike plans
- StarterFree
- Team$4 a month
- Business$8 a month
- FreeFree
- Pro$6 a month
- Ultimate$12 a month
Sup plans
- SupFree
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.
Pick Sup if…
You want what its maker publishes above — check its page for the details.